{"id":2553,"date":"2021-10-14T21:04:28","date_gmt":"2021-10-14T14:04:28","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=2553"},"modified":"2022-02-16T19:22:00","modified_gmt":"2022-02-16T12:22:00","slug":"tien-de-o-clit-ve-duong-thang-song-song-toan-lop-7","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/tien-de-o-clit-ve-duong-thang-song-song-toan-lop-7\/","title":{"rendered":"Ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song \u2013 To\u00e1n l\u1edbp 7"},"content":{"rendered":"\n<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p>Trong h\u00ecnh h\u1ecdc, c\u00e1c nh\u00e0 to\u00e1n h\u1ecdc lu\u00f4n gi\u00e0nh s\u1ef1 quan t\u00e2m v\u00e0 nghi\u00ean c\u1ee9u v\u1ec1 c\u00e1c \u0111\u00f3i t\u01b0\u1ee3ng nh\u01b0 m\u1eb7t ph\u1eb3ng, \u0111i\u1ec3m v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng. \u0110\u00e2y l\u00e0 nh\u1eefng n\u1ed9i dung mang t\u00ednh ti\u1ec1n \u0111\u1ec1 gi\u00fap x\u00e2y d\u1ee5ng n\u1ed9i dung ki\u1ebfn th\u1ee9c v\u1ec1 to\u00e1n h\u00ecnh. Trong \u0111\u00f3 nh\u00e0 to\u00e1n h\u1ecdc \u01a0-clit \u0111\u01b0\u1ee3c xem nh\u01b0 ng\u01b0\u1eddi \u0111\u1ea7u ti\u00ean \u0111\u1eb7t n\u1ec1n m\u00f3ng cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a h\u00ecnh h\u1ecdc. Ti\u00ean \u0111\u1ec1 \u01a0-clit l\u00e0 g\u00ec? N\u1ed9i dung c\u1ee7a ti\u00ean \u0111\u1ec1 \u01a0-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song nh\u01b0 th\u1ebf n\u00e0o? H\u00e3y c\u00f9ng Vietlearn t\u00ecm hi\u1ec3u v\u1ec1 n\u1ed9i dung n\u00e0y qua b\u00e0i h\u1ecdc ngay sau \u0111\u00e2y.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u01a0-clit l\u00e0 ai:<\/li><\/ol>\n\n\n\n<p>\u01a0-clit hay Euclid l\u00e0 nh\u00e0 to\u00e1n h\u1ecdc n\u1ed5i ti\u1ebfng c\u1ee7a Hy L\u1ea1p c\u1ed5 \u0111\u1ea1i, s\u1ed1ng \u1edf th\u1ebf k\u1ef7 th\u1ee9 3 Tr\u01b0\u1edbc C\u00f4ng nguy\u00ean. C\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 to\u00e1n h\u1ecdc c\u1ee7a \u00f4ng, nh\u1ea5t l\u00e0 h\u00ecnh h\u1ecdc c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn cho t\u1edbi t\u1eadn b\u00e2y gi\u1edd. C\u00e1c th\u00e0nh t\u1ef1u c\u1ee7a \u00f4ng \u0111\u01b0\u1ee3c xem nh\u01b0 \u0111\u1eb7t n\u00ean n\u1ec1n m\u00f3ng v\u1eefng ch\u1eafc cho to\u00e1n h\u1ecdc hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<p>\u01a0-clit n\u1ed5i ti\u1ebfng v\u1edbi ti\u00ean \u0111\u1ec1 mang t\u00ean \u00f4ng v\u1ec1 m\u1ed1i quan h\u1ec7 gi\u1eefa \u0111i\u1ec3m v\u1edbi \u0111\u01b0\u1eddng \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng. Ti\u00ean \u0111\u1ec1 c\u00f3 \u00fd ngh\u0129a to l\u1edbn gi\u00fap c\u00e1c nh\u00e0 to\u00e1n h\u1ecdc hi\u1ec7n \u0111\u1ea1i \u0111i s\u00e2u nghi\u00ean c\u1ee9u v\u1ec1 h\u00ecnh h\u1ecdc.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\"><li>Ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<\/li><\/ol>\n\n\n\n<p>Cho \u0111\u01b0\u1eddng th\u1eb3ng xy v\u00e0 \u0111i\u1ec3m A n\u1eb1m ngo\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng. B\u1eb1ng c\u00e1ch \u0111\u01a1n gi\u1ea3n, ta c\u00f3 th\u1ec3 v\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua A v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng xy.<\/p>\n\n\n\n<p>Nh\u00e0 to\u00e1n h\u1ecdc Euclid ch\u1ec9 ra r\u1eb1ng, ch\u1ec9 c\u00f3 duy nh\u1ea5t m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua A v\u00e0 song song v\u1edbi xy. \u0110\u01b0\u1ee3c g\u1ecdi l\u00e0 ti\u00ean \u0111\u1ec1 Euclid v\u00e0 ph\u00e1t bi\u1ec3u nh\u01b0 sau:<\/p>\n\n\n\n<p>Th\u1eadt v\u1eady, ti\u00ean \u0111\u1ec1 \u01a0-clit \u0111\u01b0\u1ee3c th\u1eeba nh\u1eadn m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i ch\u1ee9ng minh. B\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c nghi\u1ec7m v\u00e0 ch\u1ee9ng minh b\u1eb1ng h\u00ecnh h\u1ecdc kh\u00f4ng gian, h\u00ecnh h\u1ecdc ph\u1eb3ng,\u2026. c\u00e1c nh\u00e0 to\u00e1n h\u1ecdc (c\u1ea3 th\u1eddi c\u1ed5 \u0111\u00e2\u1ecb v\u00e0 trung \u0111\u1ea1i) \u0111\u1ec1u ch\u1ec9 ra r\u1eb1ng ti\u00ean \u0111\u1ec1 \u01a0-clit lu\u00f4n lu\u00f4n \u0111\u00fang. D\u1ef1a tr\u00ean ti\u00ean \u0111\u1ec1 \u01a0-clit, ng\u01b0\u1eddi ta \u0111\u00e3 suy ra nhi\u1ec1u n\u1ed9i dung ki\u1ebfn th\u1ee9c to\u00e1n h\u1ecdc c\u00f3 t\u00ednh \u1ee9ng d\u1ee5ng cao.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\"><li>T\u00ednh ch\u1ea5t c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<\/li><\/ol>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<p>B\u01b0\u1edbc 1: V\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 a\u2019 sao cho a song song v\u1edbi a\u2019<\/p>\n\n\n\n<p>B\u01b0\u1edbc 2: V\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng x c\u1eaft a t\u1ea1i A, c\u1eaft a\u2019 t\u1ea1i B.<\/p>\n\n\n\n<p>B\u01b0\u1edbc 3: D\u00f9ng \u00eake \u0111o s\u1ed1 \u0111o g\u00f3c c\u1ee7a 2 g\u00f3c \u0111\u1ed3ng v\u1ecb v\u00e0 2 g\u00f3c so le trong.<\/p>\n\n\n\n<p>B\u01b0\u1edbc 4: R\u00fat ra nh\u1eadn x\u00e9t:<\/p>\n\n\n\n<p>Ta th\u1ea5y:<\/p>\n\n\n\n<p>Hai g\u00f3c \u0111\u1ed3ng v\u1ecb c\u00f3 s\u1ed1 \u0111o b\u1eb1ng nhau.<\/p>\n\n\n\n<p>Hai g\u00f3c so le trong c\u00f3 s\u1ed1 \u0111o b\u1eb1ng nhau.<\/p>\n\n\n\n<p>K\u1ebft lu\u1eadn:<\/p>\n\n\n\n<p>C\u0169ng b\u1eb1ng th\u1ef1c nghi\u1ec7m, ng\u01b0\u1eddi ta \u0111\u00e3 ch\u1ee9ng minh r\u1eb1ng \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song s\u1ebd t\u1ea1o ra c\u00e1c c\u1eb7p g\u00f3c \u0111\u1eb7c bi\u1ec7t, c\u00f3 m\u1ed1i quan h\u1ec7 ch\u1eb7t ch\u1ebd v\u1ec1 s\u1ed1 \u0111o g\u00f3c. Hai g\u00f3c \u0111\u1ed3ng v\u1ecb c\u00f3 s\u1ed1 \u0111o b\u1eb1ng nhau. hai g\u00f3c trong c\u00f9ng ph\u00eda c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng 180 (hay b\u00f9 nhau). Hai g\u00f3c so le trong c\u00f3 s\u1ed1 \u0111o b\u1eb1ng nhau,\u2026<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\"><li>M\u1eb9o ghi nh\u1edb ti\u00ean \u0111\u1ec1 \u01a0-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<\/li><\/ol>\n\n\n\n<p>\u2013 Ch\u1ec9 c\u00f3 duy nh\u1ea5t m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m c\u1ed1 \u0111\u1ecbnh v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u00e3 cho<\/p>\n\n\n\n<p>Kh\u00f4ng c\u00f3 nhi\u1ec1u h\u01a1n 1 \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng \u0111i qua m\u1ed9t \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u00e3 cho. N\u1ebfu c\u00f3 nhi\u1ec1u h\u01a1n 1 \u0111\u01b0\u1eddng th\u1eb3ng, \u0111\u00f3 l\u00e0 tr\u01b0\u1eddng h\u1ee3p c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng tr\u00f9ng nhau.<\/p>\n\n\n\n<p>\u2013 Hai g\u00f3c \u0111\u1ed3ng v\u1ecb c\u00f3 s\u1ed1 \u0111o b\u1eb1ng nhau<\/p>\n\n\n\n<p>Hai g\u00f3c \u0111\u1ed3ng v\u1ecb l\u00e0 hai g\u00f3c n\u1eb1m \u1edf v\u1ecb tr\u00ed t\u01b0\u01a1ng \u1ee9ng khi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 s\u1ed1 \u0111o c\u1ee7a ch\u00fang lu\u00f4n lu\u00f4n b\u1eb1ng nhau.<\/p>\n\n\n\n<p>\u2013 Hai g\u00f3c so le trong c\u00f3 s\u1ed1 \u0111o b\u1eb1ng nhau<\/p>\n\n\n\n<p>Hai g\u00f3c so le trong l\u00e0 hai g\u00f3c \u0111\u01b0\u1ee3c tao ra \u1edf ph\u00eda trong c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb1ng song song b\u1ecb c\u1eaft b\u1edfi 1 \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t. S\u1ed1 \u0111o c\u1ee7a ch\u00fang lu\u00f4n lu\u00f4n b\u1eb1ng nhau.<\/p>\n\n\n\n<p>\u2013 Hai g\u00f3c trong c\u00f9ng ph\u00eda c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng 180\u2070 (b\u00f9 nhau)<\/p>\n\n\n\n<p>G\u00f3c trong c\u00f9ng ph\u00eda l\u00e0 g\u00f3c \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song. T\u1ed5ng s\u1ed1 \u0111o g\u00f3c c\u1ee7a hai g\u00f3c trong c\u00f9ng ph\u00eda b\u1eb1ng 180, do \u0111\u00f3 hai g\u00f3c trong c\u00f9ng ph\u00eda th\u00ec b\u00f9 nhau.<\/p>\n\n\n\n<p>\u2013 Hai g\u00f3c so le ngo\u00e0i th\u00ec c\u00f3 s\u1ed1 \u0111o b\u1eb1ng nhau<\/p>\n\n\n\n<p>Hai g\u00f3c so le ngo\u00e0i \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song sonng. S\u00f3 \u0111o g\u00f3c so le ngo\u00e0i lu\u00f4n lu\u00f4n b\u1eb1ng nhau.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\"><li>B\u00e0i t\u1eadp v\u1eadn d\u1ee5ng<\/li><\/ol>\n\n\n\n<p>Cho b\u1ea3ng s\u1ed1 \u0111o c\u1ee7a c\u00e1c g\u00f3c, h\u00e3y ho\u00e0n th\u00e0nh s\u1ed1 \u0111o c\u00e1c g\u00f3c c\u00f2n thi\u1ebfu<\/p>\n\n\n\n<p>a. G\u00f3c \u0111\u1ed3ng v\u1ecb<\/p>\n\n\n\n<p>G\u00f3c 1 20\u2070 ? 45\u2070 52\u2070 89\u2070 ? 123\u2070 ?<\/p>\n\n\n\n<p>G\u00f3c 2 ? 30\u2070 ? ? ? 100\u2070 ? 177\u2070<\/p>\n\n\n\n<p>b. G\u00f3c so le trong<\/p>\n\n\n\n<p>G\u00f3c 1 ? ? ? 67\u2070 ? 105\u2070 130\u2070 ?<\/p>\n\n\n\n<p>G\u00f3c 2 10\u2070 25\u2070 50\u2070 ? 90\u2070 ? ? 160\u2070<\/p>\n\n\n\n<p>c. G\u00f3c trong c\u00f9ng ph\u00eda<\/p>\n\n\n\n<p>G\u00f3c 1 5\u2070 ? ? 80\u2070 88\u2070 95\u2070 1150\u2070 150\u2070<\/p>\n\n\n\n<p>G\u00f3c 2 ? 23\u2070 59\u2070 ? ? ? ? ?<\/p>\n\n\n\n<p>d. G\u00f3c so le ngo\u00e0i<\/p>\n\n\n\n<p>G\u00f3c 1 ? ? ? 67\u2070 ? 127\u2070 131\u2070 180\u2070<\/p>\n\n\n\n<p>G\u00f3c 2 10\u2070 17\u2070 25\u2070 ? 92\u2070 ? ? ?<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>\u00c1p d\u1ee5ng Ti\u00ean \u0111\u1ec1 \u01a0-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song ta c\u00f3:<\/p>\n\n\n\n<p>a. S\u1ed1 \u0111o c\u00e1c g\u00f3c \u0111\u1ed3ng v\u1ecb<\/p>\n\n\n\n<p>\u00c1p d\u1ee5ng \u0111\u1ecbnh l\u00fd v\u1ec1 m\u1ed1i quan s\u1ed1 \u0111o g\u00f3c gi\u1eefa hai g\u00f3c \u0111\u1ed3ng v\u1ecb ta c\u00f3:<\/p>\n\n\n\n<p>G\u00f3c 1 20\u2070 30\u2070 45\u2070 52\u2070 89\u2070 100\u2070 123\u2070 177\u2070<\/p>\n\n\n\n<p>G\u00f3c 2 20\u2070 30\u2070 45\u2070 52\u2070 89\u2070 100\u2070 123\u2070 177\u2070<\/p>\n\n\n\n<p>b. S\u1ed1 \u0111o c\u00e1c g\u00f3c so le trong<\/p>\n\n\n\n<p>\u00c1p d\u1ee5ng \u0111\u1ecbnh l\u00fd v\u1ec1 m\u1ed1i quan h\u1ec7 s\u1ed1 \u0111o g\u00f3c gi\u1eefa hai g\u00f3c so le trong ta c\u00f3:<\/p>\n\n\n\n<p>G\u00f3c 1 10\u2070 25\u2070 50\u2070 67\u2070 90\u2070 105\u2070 130\u2070 160\u2070<\/p>\n\n\n\n<p>G\u00f3c 2 10\u2070 25\u2070 50\u2070 67\u2070 90\u2070 105\u2070 130\u2070 160\u2070<\/p>\n\n\n\n<p>c. S\u1ed1 \u0111o c\u00e1c g\u00f3c trong c\u00f9ng ph\u00eda<\/p>\n\n\n\n<p>\u00c1p d\u1ee5ng \u0111\u1ecbnh l\u00fd v\u1ec1 m\u1ed1i quan h\u1ec7 s\u1ed1 \u0111o gi\u1eefa hai g\u00f3c trong c\u00f9ng ph\u00eda ta c\u00f3:<\/p>\n\n\n\n<p>G\u00f3c 1 5\u2070 157\u2070 121\u2070 80\u2070 88\u2070 95\u2070 115\u2070 150\u2070<\/p>\n\n\n\n<p>G\u00f3c 2 175\u2070 23\u2070 59\u2070 100\u2070 92\u2070 85\u2070 65\u2070 30\u2070<\/p>\n\n\n\n<p>d. S\u1ed1 \u0111o c\u00e1c g\u00f3c so le ngo\u00e0i<\/p>\n\n\n\n<p>\u00c1p d\u1ee5ng \u0111\u1ecbnh l\u00fd v\u1ec1 m\u1ed1i quan h\u1ec7 s\u1ed1 \u0111o gi\u1eefa hai g\u00f3c so le ngo\u00e0i ta c\u00f3:<\/p>\n\n\n\n<p>G\u00f3c 1 10\u2070 17\u2070 25\u2070 67\u2070 92\u2070 127\u2070 131\u2070 180\u2070<\/p>\n\n\n\n<p>G\u00f3c 2 10\u2070 17\u2070 25\u2070 67\u2070 92\u2070 127\u2070 131\u2070 180\u2070<\/p>\n\n\n\n<p>L\u1eddi k\u1ebft: V\u1edbi vi\u1ec7c c\u00f9ng b\u00e9 t\u00ecm hi\u1ec3u ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft v\u00e0 h\u01b0\u1edbng d\u1eabn gi\u1ea3i m\u1ed5 s\u1ed1 b\u00e0i t\u1eadp c\u01a1 b\u1ea3n. Hy v\u1ecdng qua nh\u1eefng n\u1ed9i dung b\u00e0i vi\u1ebft tr\u00ean, Vietlearn \u0111\u00e3 gi\u00fap c\u00e1c b\u00e9 n\u1eafm \u0111\u01b0\u1ee3c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n<\/a> v\u1ec1 n\u1ed9i dung ti\u00ean \u0111\u1ec1 \u01a0-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song Tuy nhi\u00ean, \u0111\u1ec3 h\u1ecdc t\u1ed1t, c\u00e1c b\u1ebd v\u1eabn ph\u1ea3i \u00f4n luy\u1ec7n ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft \u0111\u1ed3ng th\u1eddi l\u00e0m b\u00e0i t\u1eadp m\u1ed9t c\u00e1ch \u0111\u1ec1u \u0111\u1eb7n. \u0110\u1eb7c bi\u1ec7t, h\u00e3y th\u01b0\u1eddng xuy\u00ean theo d\u00f5i Vietlearn \u0111\u1ec3 c\u1eadp nh\u1eadt nh\u1eefng b\u00e0i h\u1ecdc h\u1eefu \u00edch \u2013 To\u00e1n l\u1edbp 7 l\u00e0 chuy\u1ec7n nh\u1ecf.<\/p>\n\n\n\n<p>V\u1ec1 Vietlearn<\/p>\n\n\n\n<p>H\u1ecdc tr\u1ef1c tuy\u1ebfn t\u1ea1i Vietlearn<\/p>\n\n\n\n<p>Vietlearn l\u00e0 c\u00f4ng ty Edtech v\u1ec1 gi\u00e1o d\u1ee5c tr\u1ef1c tuy\u1ebfn, cung c\u1ea5p tr\u1ea3i nghi\u1ec7m <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a> c\u00e1 nh\u00e2n cho h\u00e0ng tr\u0103m ngh\u00ecn <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a>, sinh vi\u00ean v\u00e0 nh\u00e0 tr\u01b0\u1eddng \u0111\u1ec3 gi\u1ea3i \u0111\u00e1p nh\u1eefng y\u00eau c\u1ea7u trong vi\u1ec7c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a> Anh ng\u1eef th\u00f4ng qua m\u1ea1ng l\u01b0\u1edbi c\u00e1c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">chuy\u00ean gia<\/a> v\u00e0 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">gi\u00e1o vi\u00ean<\/a> kh\u1eafp to\u00e0n c\u1ea7u m\u00e0 ch\u00fang t\u00f4i g\u1ecdi l\u00e0 c\u00e1c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">gia s\u01b0<\/a> h\u1ecdc thu\u1eadt qu\u1ed1c t\u1ebf.<\/p>\n\n\n\n<p>Vietlearn mong mu\u1ed1n tr\u1edf th\u00e0nh h\u1ec7 th\u1ed1ng h\u1ecdc t\u1eadp th\u00edch \u1ee9ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) v\u00e0 d\u1eef li\u1ec7u l\u1edbn h\u00e0ng \u0111\u1ea7u \u0110\u00f4ng Nam \u00c1. S\u1ee9 m\u1ec7nh c\u1ee7a Vietlearn l\u00e0 truy\u1ec1n c\u1ea3m h\u1ee9ng, truy\u1ec1n l\u1eeda, v\u00e0 b\u1ed3i d\u01b0\u1ee1ng th\u1ebf h\u1ec7 tr\u1ebb. Vietlearn mong mu\u1ed1n t\u1ea1o ra s\u1ef1 thay \u0111\u1ed5i v\u1ec1 tr\u00ed tu\u1ec7, nh\u1eadn th\u1ee9c x\u00e3 h\u1ed9i truy\u1ec1n c\u1ea3m h\u1ee9ng, gi\u00fap c\u00e1c em ph\u00e1t huy h\u1ebft ti\u1ec1m n\u0103ng trong vi\u1ec7c h\u1ecdc c\u0169ng nh\u01b0 \u0111i\u1ec3m m\u1ea1nh c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p>\u0110\u0103ng k\u00fd kh\u00f3a h\u1ecdc cho con ngay h\u00f4m nay!<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u0110\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch \u2013 To\u00e1n l\u1edbp 7 l\u00e0 chuy\u1ec7n nh\u1ecf<\/p>\n\n\n\n<p>M\u1eb7t ph\u1eb3ng t\u1ecda \u0111\u1ed9 \u2013 To\u00e1n l\u1edbp 7 l\u00e0 chuy\u1ec7n nh\u1ecf<\/p>\n\n\n\n<p>V\u1ec1 Vietlearn<\/p>\n\n\n\n<p>H\u1ecdc tr\u1ef1c tuy\u1ebfn t\u1ea1i Vietlearn<\/p>\n\n\n\n<p>Vietlearn l\u00e0 c\u00f4ng ty Edtech v\u1ec1 gi\u00e1o d\u1ee5c tr\u1ef1c tuy\u1ebfn, cung c\u1ea5p tr\u1ea3i nghi\u1ec7m h\u1ecdc t\u1eadp c\u00e1 nh\u00e2n cho h\u00e0ng tr\u0103m ngh\u00ecn h\u1ecdc sinh, sinh vi\u00ean v\u00e0 nh\u00e0 tr\u01b0\u1eddng \u0111\u1ec3 gi\u1ea3i \u0111\u00e1p nh\u1eefng y\u00eau c\u1ea7u trong vi\u1ec7c h\u1ecdc t\u1eadp Anh ng\u1eef th\u00f4ng qua m\u1ea1ng l\u01b0\u1edbi c\u00e1c chuy\u00ean gia v\u00e0 gi\u00e1o vi\u00ean kh\u1eafp to\u00e0n c\u1ea7u m\u00e0 ch\u00fang t\u00f4i g\u1ecdi l\u00e0 c\u00e1c gia s\u01b0 h\u1ecdc thu\u1eadt qu\u1ed1c t\u1ebf.<\/p>\n\n\n\n<p>Vietlearn mong mu\u1ed1n tr\u1edf th\u00e0nh h\u1ec7 th\u1ed1ng h\u1ecdc t\u1eadp th\u00edch \u1ee9ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) v\u00e0 d\u1eef li\u1ec7u l\u1edbn h\u00e0ng \u0111\u1ea7u \u0110\u00f4ng Nam \u00c1. S\u1ee9 m\u1ec7nh c\u1ee7a Vietlearn l\u00e0 truy\u1ec1n c\u1ea3m h\u1ee9ng, truy\u1ec1n l\u1eeda, v\u00e0 b\u1ed3i d\u01b0\u1ee1ng th\u1ebf h\u1ec7 tr\u1ebb. Vietlearn mong mu\u1ed1n t\u1ea1o ra s\u1ef1 thay \u0111\u1ed5i v\u1ec1 tr\u00ed tu\u1ec7, nh\u1eadn th\u1ee9c x\u00e3 h\u1ed9i truy\u1ec1n c\u1ea3m h\u1ee9ng, gi\u00fap c\u00e1c em ph\u00e1t huy h\u1ebft ti\u1ec1m n\u0103ng trong vi\u1ec7c h\u1ecdc c\u0169ng nh\u01b0 \u0111i\u1ec3m m\u1ea1nh c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p>\u0110\u0103ng k\u00fd kh\u00f3a h\u1ecdc cho con ngay h\u00f4m nay!<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u0110\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch \u2013 To\u00e1n l\u1edbp<\/p>\n\n\n\n\n\n<div style=\"display:none\">\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nti\u00ean \u0111\u1ec1 \u01a1 clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u00ean \u0111\u1ec1 \u01a1 c\u01a1 l\u00edt v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nth\u1ebf n\u00e0o l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nt\u00ednh ch\u1ea5t c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng song song d v\u00e0 d&#8217;<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song d v\u00e0 d&#8217;<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nth\u1ebf n\u00e0o l\u00e0 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song khi n\u00e0o<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u00eau d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nt\u00ednh ch\u1ea5t 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nc\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u00ean \u0111\u1ec1 \u01a1clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n 7 ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 bao nhi\u00eau \u0111i\u1ec3m chung<br>\nb\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nn\u1ebfu hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nt\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nt\u00ednh ch\u1ea5t hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00fd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai duong thang song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 g\u00ec<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 g\u00ec<br>\n\u0111\u1ecbnh l\u00fd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nkhi n\u00e0o 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 26 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 5 ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong t\u00ecnh y\u00eau<br>\ncho m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng song song d1 d2<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nanh v\u00e0 em nh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nv\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nto\u00e1n l\u1edbp 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkhi n\u00e0o hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u t\u00ednh ch\u1ea5t hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn bi\u1ebft ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nti\u00eau \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng n\u00e0o sau \u0111\u00e2y song song v\u1edbi tr\u1ee5c ho\u00e0nh<br>\nvi\u1ebft pttt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nv\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 g\u00ec<br>\nto\u00e1n l\u1edbp 4 b\u00e0i 26 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau khi n\u00e0o<br>\nto\u00e1n l\u1edbp 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nchuy\u00ean \u0111\u1ec1 ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng c\u00f3 \u0111\u00e1p \u00e1n<br>\nc\u00e1ch nh\u1eadn bi\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song khi n\u00e0o<br>\nb\u00e0i 3 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nc\u00e1ch nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nbai tap ve hai duong thang song song lop 7<br>\nkh\u00e1i ni\u1ec7m hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft pt ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e1n \u0111\u1ea5t \u0111\u01b0\u1eddng th\u1eafng l\u1ee3i k\u00e9o d\u00e0i s\u00f4ng c\u00f4ng<br>\nkho\u1ea3ng c\u00e1ch 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t 3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\n1 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1ec7nh v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ns\u1ed1 \u0111i\u1ec3m chung c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nv\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc trong cad<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nb\u00e0i 28 v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncm \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\ns\u00f3ng lan truy\u1ec1n t\u1eeb ngu\u1ed3n o d\u1ecdc theo 1 \u0111\u01b0\u1eddng th\u1eb3ng v\u1edbi bi\u00ean \u0111\u1ed9 kh\u00f4ng \u0111\u1ed5i<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\n\u0111\u1ecbnh ngh\u0129a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u00eau t\u00ednh ch\u1ea5t c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1ec7nh v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nto\u00e1n l\u1edbp 4 v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nc\u00e1c c\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i gi\u1ea3ng \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nto\u00e1n l\u1edbp 7 b\u00e0i 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh ngh\u0129a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nba \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4 trang 53<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 53<br>\n\u0111i\u1ec1u ki\u1ec7n 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n l\u1edbp 4 b\u00e0i v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t ba \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u00fd thuy\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u t\u00ednh ch\u1ea5t c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n 7<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song d1 v\u00e0 d2<br>\nc\u00f4ng th\u1ee9c t\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft pttt bi\u1ebft ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n2 duong thang song song<br>\nt\u00ednh ch\u1ea5t 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong tam gi\u00e1c<br>\nd\u1ea5u hi\u1ec7u hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nth\u1ebf n\u00e0o l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng y=ax+b<br>\nc\u00e1c c\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 g\u00ec<br>\nl\u00fd thuy\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song d1 c\u1eaft d2 d3<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song khi<br>\n\u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 b\u1eb1ng nhau kh\u00f4ng<br>\nm\u1ed9t ngu\u1ed3n o ph\u00e1t s\u00f3ng c\u01a1 c\u00f3 t\u1ea7n s\u1ed1 10hz truy\u1ec1n theo m\u1eb7t n\u01b0\u1edbc theo \u0111\u01b0\u1eddng th\u1eb3ng v\u1edbi v=60cm\/s<br>\nh\u00ecnh \u1ea3nh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nv\u1ebd 1 \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau \u1edf v\u00f4 c\u1ef1c<br>\nc\u00e1ch v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n 9 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nc\u00e1ch t\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nm\u1ed9t s\u00f3ng c\u01a1 h\u1ecdc lan truy\u1ec1n d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng trong oxyz<br>\nnh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ef1 \u00e1n \u0111\u01b0\u1eddng th\u1eafng l\u1ee3i k\u00e9o d\u00e0i s\u00f4ng c\u00f4ng<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song lop 7<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1ec7nh v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u00fang ta nh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho 1 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 m\u1ea5y \u0111i\u1ec3m chung<br>\n\u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua \u0111i\u1ec3m a(1; &#8211; 8) v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng (d): c\u00f3 tung \u0111\u1ed9 g\u1ed1c l\u00e0<br>\nkh\u00e1i ni\u1ec7m 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\n\u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nth\u1ebf n\u00e0o l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nn\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng song song th\u00ec<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng l\u1edbp 10<br>\nch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nb\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\n\u0111\u1ecbnh ngh\u0129a \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n l\u1edbp 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nso\u1ea1n to\u00e1n 9 b\u00e0i 4 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\n\u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nch\u1ee9ng minh 1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nc\u00e1ch vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi d&#8217;<br>\nnh\u1eadn bi\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nti\u00eau \u0111\u1ec1 \u01a1 clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh ngh\u0129a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n5 d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u1ec3 ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nth\u1ebf n\u00e0o l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 c\u1eaft nhau<br>\nti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u1ed3 th\u1ecb song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song khi<br>\n\u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u00ean \u0111\u1ec1 o clit v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c b\u00e0i t\u1eadp ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7 n\u00e2ng cao<br>\nt\u00ecm ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau khi n\u00e0o<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng khi n\u00e0o<br>\nv\u1ebd c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nto\u00e1n 7 b\u00e0i 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n 11 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 bi\u1ebft ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nto\u00e1n 9 b\u00e0i 4 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\n\u0111i\u1ec1u ki\u1ec7n hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkhi n\u00e0o \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\ngi\u1ea3i b\u00e0i ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec vecto ch\u1ec9 ph\u01b0\u01a1ng c\u1ee7a<br>\nb\u00e0i t\u1eadp v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 44 v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nc\u00e1c c\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm m \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song<br>\nduong thang song song<br>\nc\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song 11<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 \u0111i\u1ec3m chung kh\u00f4ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau khi<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 t\u00ednh ch\u1ea5t g\u00ec<br>\nb\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nn\u1ebfu cu\u1ed9c s\u1ed1ng l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\ntr\u1eafc nghi\u1ec7m \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nb\u00e0i gi\u1ea3ng hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 nh\u01b0 th\u1ebf n\u00e0o<br>\ntc 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng trong kh\u00f4ng gian quan h\u1ec7 song song<br>\nh\u00ecnh chi\u1ebfu song song c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nn\u00eau \u0111\u1ecbnh ngh\u0129a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng trong oxyz<br>\nv\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\npttt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00fd thuy\u1ebft<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 52<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e0i gi\u1ea3ng hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nl\u1ec7nh v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nc\u00f4ng th\u1ee9c hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u1ea1o \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 j<br>\nanh va em nhu hai duong thang song song<br>\n1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ho\u00e0nh<br>\ns\u1ed1 ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song sbt<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau sbt<br>\nsong song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nto\u00e1n 4 v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 g\u00ec<br>\nto\u00e1n 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n 10<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 \u0111i\u1ec3m chung kh\u00f4ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 ch\u00e9o nhau<br>\nto\u00e1n h\u00ecnh 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song d1 d2<br>\nt\u00ecm m \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 12<br>\nn\u00eau t\u00ednh ch\u1ea5t hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1ec7nh cad v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch cm \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai duong thang song song co gap nhau khong<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian oxyz<br>\nkho\u1ea3ng c\u00e1ch hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00fd 3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00fd \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nxoay \u0111\u1ed1i t\u01b0\u1ee3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nto\u00e1n h\u00ecnh l\u1edbp 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 t\u00ednh ch\u1ea5t g\u00ec<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong oxyz<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng oxyz<br>\nto\u00e1n l\u1edbp 4 trang 51 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch t\u00ednh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng d v\u00e0 d&#8217; song song nhau<br>\nt\u00ecm m \u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00fd c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau violet<br>\nve 2 duong thang song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng g\u00ec<br>\ndau hieu nhan biet hai duong thang song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng ch\u1ee9a \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nso\u1ea1n b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ndhnb 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec vecto ch\u1ec9 ph\u01b0\u01a1ng c\u1ee7a<br>\nc\u00e1ch v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0.<br>\nc\u00e1ch v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 5 ti\u00ean \u0111\u1ec1 \u01a1clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngi\u00e1o \u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 h\u1ec7 s\u1ed1 g\u00f3c<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song t\u1ea1o ra s\u1ed1 c\u1eb7p g\u00f3c kh\u00f4ng chung \u0111\u1ec9nh b\u1eb1ng nhau l\u00e0<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song a v\u00e0 b<br>\nto\u00e1n l\u1edbp 4 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n 9 b\u00e0i 4 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau violet<br>\nl\u1ec7nh v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song trong autocad<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song khi n\u00e0o to\u00e1n 10<br>\ngi\u1ea3i to\u00e1n 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 h\u1ec7 s\u1ed1 g\u00f3c<br>\ntr\u00ean m\u1eb7t ph\u1eb3ng c\u00f3 2017 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\npt ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau to\u00e1n 9<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng song song a v\u00e0 a&#8217;<br>\nb\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song luy\u1ec7n t\u1eadp<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 vu\u00f4ng g\u00f3c<br>\ngi\u00e1o \u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 g\u1eb7p nhau kh\u00f4ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau-b\u00e0i gi\u1ea3ng \u0111i\u1ec7n t\u1eed<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi 1 \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nn\u1ebfu 2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nv\u00ed d\u1ee5 v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngiai bai tap toan lop 7 bai hai duong thang song song<br>\nh\u1ec7 s\u1ed1 g\u00f3c c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nt\u00ednh ch\u1ea5t c\u1ee7a 3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi nhau th\u00ec song song v\u1edbi nhau<br>\n3 d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00ed v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n l\u1edbp 8 b\u00e0i 10 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng nh\u01b0 th\u1ebf n\u00e0o<br>\ntfc l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm m \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song vu\u00f4ng g\u00f3c<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau khi n\u00e0o<br>\nkhi hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song s\u00e1ch b\u00e0i t\u1eadp<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec sao<br>\nph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nlenh ve hai duong thang song song trong cad<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi d3 c\u1eaft d1 v\u00e0 d2<br>\nl\u1eadp ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi tr\u1ee5c ho\u00e0nh<br>\ntoan 8 bai 10 duong thang song song<br>\nv\u1ecb tr\u00ed t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c g\u00f3c c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nlenh ve duong thang song song<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec \u0111\u1ed3ng ph\u1eb3ng<br>\n\u0111\u1ecbnh ngh\u0129a kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng chi\u1ebfn th\u1eafng s\u00f4ng l\u00f4 tuy\u00ean quang<br>\nb\u00e0i gi\u1ea3ng hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng song song d1 c\u1eaft d2 d3<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c th\u00ec song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng l\u1edbp 9<br>\nto\u00e1n 11 b\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nt\u00ecm ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nt\u00ecm m \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ho\u00e0nh<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\ntinh chat 2 duong thang song song<br>\nch\u01b0\u01a1ng 1 \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nv\u00ec sao hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nv\u1ebd nhi\u1ec1u \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song t\u00ednh ch\u1ea5t<br>\nem v\u00e0 anh nh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111i\u1ec1u ki\u1ec7n m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec h\u1ec7 s\u1ed1 g\u00f3c<br>\nn\u00eau d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n5 d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n 11<br>\ncach chung minh hai duong thang song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng l\u1edbp 10<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi nhau th\u00ec song song<br>\nchuy\u00ean \u0111\u1ec1 ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngi\u00e1o \u00e1n b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch t\u1eeb \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ebfn m\u1eb7t ph\u1eb3ng song song<br>\nc\u00e1c tr\u01b0\u1eddng h\u1ee3p 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nth\u1ebf n\u00e0o l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00e1ch \u0111\u1ec1u<br>\n\u0111\u01b0\u1eddng th\u1eb3ng a song song v\u1edbi m\u1eb7t ph\u1eb3ng p n\u1ebfu<br>\n\u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00ed hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song d v\u00e0 d ph\u1ea9y<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec nh\u01b0 th\u1ebf n\u00e0o<br>\nc\u00f4ng th\u1ee9c ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e0i ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh ngh\u0129a v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng d1 v\u00e0 d2 song song v\u1edbi nhau c\u00f3 bao nhi\u00eau ph\u00e9p t\u1ecbnh ti\u1ebfn<br>\nve duong thang song song autocad<br>\nc\u00e1ch t\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u1ec9 l\u1ec7 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11 n\u00e2ng cao<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau th\u00ec<br>\nt\u00ecm vect\u01a1 ph\u00e1p tuy\u1ebfn c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00f4ng th\u1ee9c t\u00ednh kho\u1ea3ng c\u00e1ch 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng trong kh\u00f4ng gian. quan h\u1ec7 song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song g\u1eb7p nhau \u1edf \u0111\u00e2u<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song d3 c\u1eaft d1 d2<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song \u0111\u1ecbnh ngh\u0129a<br>\nn\u00eau t\u00ednh ch\u1ea5t 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nh\u00ecnh \u1ea3nh th\u1ef1c t\u1ebf v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong oxy<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 b\u1eb1ng nhau kh\u00f4ng<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong m\u1eb7t ph\u1eb3ng<br>\ntr\u1eafc nghi\u1ec7m hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\npt \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft pttt bi\u1ebft tt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi d1 v\u00e0 c\u1eaft c\u1ea3 hai \u0111\u01b0\u1eddng th\u1eb3ng d2 v\u00e0 d3.<br>\nph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng d<br>\nc\u00e1c g\u00f3c trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nsong song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nti\u1ebfp tuy\u1ebfn \u0111\u1ed3 th\u1ecb song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nn\u00eau t\u00ednh ch\u1ea5t c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\ncm 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u00fd thuy\u1ebft v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t m\u1eb7t ph\u1eb3ng th\u00ec song song<br>\n2 ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nt\u1eadp v\u1ebd ph\u00e1c hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 s\u1ed1 \u0111i\u1ec3m chung l\u00e0<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c tung<br>\nto\u00e1n h\u00ecnh 11 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong tam gi\u00e1c<br>\nkh\u00e1i ni\u1ec7m \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00f4ng th\u1ee9c 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00ed 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu 1 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\n\u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi tr\u1ee5c oy<br>\nn\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nem v\u00e0 anh l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00ed nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ntien de o-clit ve duong thang song song<br>\n\u0111\u1ecbnh l\u00fd \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\ng\u00f3c t\u1ea1o b\u1edfi 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1ec7nh v\u1ebd 1 \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nb\u00e0i 2 hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong oxyz<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bt hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch x\u00e1c \u0111\u1ecbnh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng trong kh\u00f4ng gian<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c oy<br>\nc\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng trong oxyz<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song d v\u00e0 d&#8217; c\u00f3 bao nhi\u00eau ph\u00e9p t\u1ecbnh ti\u1ebfn bi\u1ebfn d th\u00e0nh d&#8217;<br>\nd \u0111i qua m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 6<br>\nc\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nluy\u1ec7n t\u1eadp ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ntinh chat hai duong thang song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng oxyz<br>\nt\u00ecm c\u00e1c c\u1eb7p \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi 2 m\u1eb7t ph\u1eb3ng<br>\nm\u1eb7t ph\u1eb3ng song song \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e0i t\u1eadp v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox<br>\nt\u00ednh ch\u1ea5t \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00e1ch \u0111\u1ec1u<br>\nt\u00ednh ch\u1ea5t hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong tam gi\u00e1c<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nparabol song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song 11<br>\nn\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\ngi\u1ea3i b\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nb\u00e0i gi\u1ea3ng \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nbi\u1ebft ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nto\u00e1n 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1ec7nh bo tr\u00f2n 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nnh\u01b0 th\u1ebf n\u00e0o l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh 3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 m\u1ea5y \u0111i\u1ec3m chung<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song khi n\u00e0o<br>\nt\u00ecm m \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\ngi\u1ea3i b\u00e0i to\u00e1n v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1ed9t s\u00f3ng c\u01a1 lan truy\u1ec1n tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng t\u1eeb \u0111i\u1ec3m o \u0111\u1ebfn \u0111i\u1ec3m m c\u00e1ch o m\u1ed9t \u0111o\u1ea1n d<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n l\u1edbp 4<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau tr\u00f9ng nhau<br>\nkhi n\u00e0o th\u00ec 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t m\u1eb7t ph\u1eb3ng th\u00ec song song<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bt 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nduong thang song song mat phang<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c oy<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng qua 1 \u0111i\u1ec3m v\u00e0 song song<br>\ntrong kh\u00f4ng gian hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nanh v\u1edbi em nh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 44 v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 52<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nvi\u1ebft pttt c\u1ee7a c song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 12<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song violet<br>\n\u0111\u1ecbnh ngh\u0129a c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ndau hieu nhan biet 2 duong thang song song<br>\nt\u00ednh ch\u1ea5t hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nb\u00e0i h\u00e1t hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song g\u1eb7p nhau \u1edf v\u00f4 c\u1ef1c<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song tr\u00ean tr\u1ee5c t\u1ecda \u0111\u1ed9<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec h\u1ec7 s\u1ed1 g\u00f3c<br>\n\u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec a=a&#8217;<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song b\u00e0i 44 trang 52<br>\nch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nl\u1ec7nh v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ntr\u1eafc nghi\u1ec7m \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 bao nhi\u00eau \u0111i\u1ec3m chung<br>\npt tiep tuyen song song voi duong thang<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song \u0111\u1ecbnh ngh\u0129a<br>\ns\u1ed1 \u0111i\u1ec3m chung c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh l\u00ed v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n l\u1edbp 7 h\u00ecnh h\u1ecdc hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ns\u00f3ng c\u01a1 lan truy\u1ec1n t\u1eeb ngu\u1ed3n o d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng v\u1edbi bi\u00ean \u0111\u1ed9 kh\u00f4ng \u0111\u1ed5i<br>\nc\u00f4ng th\u1ee9c \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho s\u00f3ng lan truy\u1ec1n d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng<br>\nl\u1eadp ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai m\u1eb7t ph\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00ec song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch cm 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee7 \u0111\u1ec1 7 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng trong kh\u00f4ng gian quan h\u1ec7 song song<br>\nk\u00fd hi\u1ec7u 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t c\u1ee7a ba \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c c\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nto\u00e1n 8 b\u00e0i 10 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c g\u00f3c b\u1eb1ng nhau c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c d\u1ea1ng b\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau<br>\nc\u00e1ch vi\u1ebft pttt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nch\u00fang ta l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song t\u00ecnh y\u00eau<br>\nt\u00ednh kho\u1ea3ng c\u00e1ch 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nduong thang song song voi mot duong thang cho truoc lop 8<br>\ngi\u1ea3i b\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t m\u1eb7t ph\u1eb3ng<br>\nkhi n\u00e0o hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\nt\u1ec9 s\u1ed1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nc\u00e1ch ch\u1ee9ng minh 1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nb\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng violet<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nmu\u1ed1n ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nc\u00e1ch v\u1ebd m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nd\u1ea5u hi\u1ec7u c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong m\u1eb7t ph\u1eb3ng t\u1ecda \u0111\u1ed9<br>\nchuy\u00ean \u0111\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nh\u1ec7 s\u1ed1 g\u00f3c c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nsbt to\u00e1n 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong tam gi\u00e1c<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 b ch\u00e9o nhau c\u00f3 bao nhi\u00eau m\u1eb7t ph\u1eb3ng ch\u1ee9a a v\u00e0 song song v\u1edbi b<br>\ntien de oclit ve duong thang song song lop 7<br>\nto\u00e1n l\u1edbp 9 b\u00e0i 4 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song lop 9<br>\nhai \u0111\u01b0\u1eddng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 26 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nto\u00e1n h\u00ecnh 11 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4 trang 53<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng d1 v\u00e0 d2 song song v\u1edbi nhau<br>\nl\u00fd thuy\u1ebft \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song 7<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 2 ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngi\u00e1o \u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nt\u00ednh ch\u1ea5t \u0111\u01b0\u1eddng song song trong h\u00ecnh thang<br>\nb\u00e0i 10 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nbai tap hai duong thang song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong oxyz<br>\nc\u00f3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvecto ch\u1ec9 ph\u01b0\u01a1ng c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox<br>\nquan he song song cua hai duong thang<br>\nc\u00e1ch gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nm\u1ed9t h\u1ecd g\u1ed3m 3 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft m\u1ed9t h\u1ecd g\u1ed3m 4 \u0111\u01b0\u1eddng th\u1eb3ng kh\u00e1c song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song tr\u1ee5c ox<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song b\u00e0i t\u1eadp<br>\nt\u00ecm m de 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nto\u00e1n h\u00ecnh 11 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4 trang 51<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong oxy<br>\nc\u00e1c \u0111\u1ecbnh l\u00fd v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u00eau c\u00e1c c\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nanh v\u00e0 em nh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song kh\u00f4ng m\u1ed9t tia hi v\u1ecdng<br>\nch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng l\u1edbp 11<br>\nb\u00e0i t\u1eadp ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nv\u00ed d\u1ee5 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi oy<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song vietjack<br>\nn\u1ebfu hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 51 l\u1edbp 4<br>\npt \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi oy<br>\nc\u00e1ch t\u00ednh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song oy<br>\nt\u00ecm m \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c tung<br>\nluy\u1ec7n t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n 7<br>\nl\u00fd thuy\u1ebft b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u t\u00ednh ch\u1ea5t c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng song song<br>\nb\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1eb7t ph\u1eb3ng ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nbai tap hai duong thang song song va cheo nhau<br>\n\u0111k hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngi\u1ea3i th\u00edch hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 53 l\u1edbp 4<br>\nv\u00ec sao 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song l\u00fd thuy\u1ebft<br>\nanh v\u00e0 em nh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song kh\u00f4ng m\u1ed9t tia hy v\u1ecdng<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng trong kh\u00f4ng gian<br>\nc\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\nc\u00e1ch ki\u1ec3m tra 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nh\u1ec7 s\u1ed1 g\u00f3c c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nhai duong thang cheo nhau va hai duong thang song song lop 11<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 song song<br>\nkho\u1ea3ng c\u00e1ch 2 \u0111\u01b0\u1eddng th\u1eb3ng song song oxyz<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng d v\u00e0 d&#8217; song song<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song x\u00e1c \u0111\u1ecbnh m\u1ed9t m\u1eb7t ph\u1eb3ng<br>\nto\u00e1n b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song tr\u00ean tr\u1ee5c t\u1ecda \u0111\u1ed9<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 hai \u0111\u01b0\u1eddng<br>\ndk 2 duong thang song song<br>\nto\u00e1n h\u00ecnh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng m\u1eb7t ph\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00fd thuy\u1ebft<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec b\u1eb1ng nhau<br>\nt\u1ea1i sao d\u00f2ng s\u00f4ng kh\u00f4ng ch\u1ea3y theo \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng y = 3x &#8211; 2 v\u00e0 \u0111i qua \u0111i\u1ec3m m(2;3)<br>\nc\u00e1ch v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song b\u1eb1ng eke<br>\nmat phang song song duong thang<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 9<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng h\u00e0m s\u1ed1 song song<br>\nso\u1ea1n b\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh l\u00ed v\u1ec1 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nth\u00e0 l\u00e0m \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u1ebfp tuy\u1ebfn song song \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 51 to\u00e1n l\u1edbp 4<br>\nduong thang song song va duong thang cat nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c th\u00ec song song<br>\nph\u00e1t bi\u1ec3u ti\u00ean \u0111\u1ec1 \u01a1clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp to\u00e1n l\u1edbp 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp to\u00e1n v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai duong thang song song la<br>\nb\u00e0i to\u00e1n ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00f4ng th\u1ee9c t\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song \u0111i\u1ec1u ki\u1ec7n<br>\ntrong m\u1eb7t ph\u1eb3ng cho 5 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nv\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song trong autocad<br>\n4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh tt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nto\u00e1n 9 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau violet<br>\nt\u00ecm \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nti\u00ean \u0111\u1ec1 \u01a1 clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song sbt<br>\nc\u00e1ch v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00ec song song v\u1edbi nhau<br>\ncho \u0111\u01b0\u1eddng th\u1eb3ng a c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ntao duong thang song song trong cad<br>\npttt song song voi duong thang<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song d v\u00e0 d\u2019. c\u00f3 bao nhi\u00eau ph\u00e9p v\u1ecb t\u1ef1 v\u1edbi t\u1ec9 s\u1ed1 k = 100 bi\u1ebfn d th\u00e0nh d\u2019 ?<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song tr\u1ee5c ho\u00e0nh<br>\nluy\u1ec7n t\u1eadp 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox c\u00f3 d\u1ea1ng<br>\nc\u00e1c g\u00f3c trong 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 12<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 b song song v\u1edbi nhau<br>\n\u0111\u1ec3 ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ntoan 7 hinh hoc bai 4 hai duong thang song song<br>\nc\u00e1ch x\u00e1c \u0111\u1ecbnh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nqua m\u1ed9t \u0111i\u1ec3m \u1edf ngo\u00e0i m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng ch\u1ec9 c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u00f3.<br>\nm\u1ed9t t\u00e0u th\u1ee7y ch\u1ea1y tr\u00ean s\u00f4ng theo \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00f4ng th\u1ee9c kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ndinh nghia hai duong thang song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho \u0111\u01b0\u1eddng th\u1eb3ng a c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song b v\u00e0 b&#8217;<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song &#8230;<br>\nve 2 duong thang song song cad<br>\ntien de o-clit ve duong thang song song luyen tap<br>\nchuy\u00ean \u0111\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai duong thang song song khi nao<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 bao gi\u1edd g\u1eb7p nhau<br>\n\u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nth\u00e0 l\u00e0m 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nchung minh duong thang song song voi mat phang<br>\nb\u00e0i t\u1eadp v\u1ec1 t\u00ednh ch\u1ea5t hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n5 c\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nth\u1ebf n\u00e0o l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nn\u00eau c\u00e1c c\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp h\u00ecnh kh\u00f4ng gian 11 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nb\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nc\u00f3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song d v\u00e0 d&#8217;<br>\nc\u00f4ng th\u1ee9c t\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 42 hai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 49<br>\nvtcp c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox<br>\n\u0111\u00e1p \u00e1n b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi nhau th\u00ec song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 c\u1eaft nhau kh\u00f4ng<br>\nti\u00ean \u0111\u1ec1 \u01a1 c\u00f3 l\u00edt v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1eb7t ph\u1eb3ng ch\u1ee9a \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 song song<br>\nc\u00e1c tr\u01b0\u1eddng h\u1ee3p hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song \u0111\u1ed3 th\u1ecb<br>\nc\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\ngi\u1ea3i b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u00ean \u0111\u1ec1 \u01a1clit v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1ed9t s\u00f3ng c\u01a1 lan truy\u1ec1n d\u1ecdc theo 1 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nduong thang song song voi mat phang<br>\nc\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\nv\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong t\u00ecnh y\u00eau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong th\u1ef1c t\u1ebf<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 12<br>\nb\u00e0i gi\u1ea3ng hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau<br>\nb\u00e0i gi\u1ea3ng ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n 8<br>\ngi\u00e1o \u00e1n \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\ngi\u00e1o \u00e1n \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nn\u1ebfu c\u00e1ch v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nd\u1ea5u hi\u1ec7u \u0111\u1ec3 nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ho\u00e0nh<br>\nphat bieu tien de o clit ve duong thang song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi 2 m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song kh\u00e1i ni\u1ec7m<br>\ngi\u1ea3ng b\u00e0i ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song oxyz<br>\nto\u00e1n h\u00ecnh 7 b\u00e0i 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\ntrong m\u1eb7t ph\u1eb3ng c\u00f3 2017 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 9<br>\nn\u1ebfu 1 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng trong kh\u00f4ng gian<br>\ntinh chat cua hai duong thang song song<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4 trang 52<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng y = 3x &#8211; 2 v\u00e0 \u0111i qua \u0111i\u1ec3m m(2 3)<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau trong kh\u00f4ng gian<br>\nc\u00e1ch v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong word<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi oz<br>\n2 duong thang cheo nhau va 2 duong thang song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng to\u00e1n 12<br>\n\u0111i\u1ec3m song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nve 2 duong thang song song trong autocad<br>\nl\u1ec7nh v\u1ebd c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nhai \u0111\u01b0\u01a1ng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n 4<br>\nkho\u1ea3ng c\u00e1ch 2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\ntoan 7 hai duong thang song song<br>\nviet phuong trinh tiep tuyen song song voi duong thang<br>\ntien de oclit ve duong thang song song<br>\ngi\u1ea3i b\u00e0i to\u00e1n l\u1edbp 7 b\u00e0i ti\u00ean \u0111\u1ec1 \u01a1 clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nlenh tao duong thang song song trong cad<br>\nb\u00e0i t\u1eadp ti\u00ean \u0111\u1ec1 \u01a1clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 c\u00e1ch \u0111\u1ec1u hai \u0111\u01b0\u1eddng th\u1eb3ng<br>\nnh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song b\u1eb1ng compa<br>\n\u0111i\u1ec3m chung c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1ed9t s\u00f3ng c\u01a1 lan truy\u1ec1n d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00f4ng th\u1ee9c t\u00ednh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1ed9t h\u1ecd 12 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft m\u1ed9t h\u1ecd kh\u00e1c g\u1ed3m 9 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 c\u00e1ch \u0111\u01b0\u1eddng th\u1eb3ng<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song a v\u00e0 a&#8217;. t\u00ecm t\u1ea5t c\u1ea3 nh\u1eefng ph\u00e9p t\u1ecbnh ti\u1ebfn bi\u1ebfn a th\u00e0nh a&#8217;<br>\nso\u1ea1n \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song mp<br>\nch\u00fang ta nh\u01b0 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nloi bai hat hai duong thang song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 ch\u00e9o nhau<br>\nto\u00e1n 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 51<br>\nch\u1ee9ng minh m\u1eb7t ph\u1eb3ng song song \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c tung<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song<br>\nhai ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song khi n\u00e0o<br>\nm\u1eb7t ph\u1eb3ng song song v\u1edbi 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nt\u00ecm m \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ed3 th\u1ecb song song<br>\nti\u00ean \u0111\u1ec1 \u01a1clit v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng l\u00e0 h\u00ecnh chi\u1ebfu song song<br>\nx\u00e9t v\u1ecb tr\u00ed c\u00e1c c\u1eb7p g\u00f3c t\u1ea1o b\u1edfi hai \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ecbnh ch\u1ee9ng minh song song v\u1edbi m\u1ed9t<br>\nh\u00ecnh \u1ea3nh v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u01b0 vi\u1ec7n b\u00e0i gi\u1ea3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song kh\u00f4ng bao gi\u1edd g\u1eb7p nhau<br>\nn\u00eau c\u00e1ch v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncm hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng khi n\u00e0o<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song b\u00e0i 26<br>\nc\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nquan h\u1ec7 ba \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nbi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh ngh\u0129a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nc\u00e1c c\u00e1ch cm 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 g\u00ec<br>\ncho tam gi\u00e1c abc v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song bc<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00f3 gi\u00e1 tr\u1ecb c\u1ee7a \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft pt ti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n bi\u1ebft ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong tam gi\u00e1c<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t trong hai m\u1eb7t ph\u1eb3ng song song th\u00ec vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng kia<br>\nhai duong thang song song la gi<br>\nt\u00ecnh y\u00eau nh\u01b0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song h\u00e0m s\u1ed1<br>\nb\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 j<br>\ntinh chat cua duong thang song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song b\u00e0i 42<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi d1 v\u00e0 c\u1eaft c\u1ea3 hai \u0111\u01b0\u1eddng th\u1eb3ng d2 v\u00e0 d3<br>\nv\u1edf b\u00e0i t\u1eadp to\u00e1n b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nsong song \u0111\u01b0\u1eddng th\u1eb3ng<br>\nt\u1ea1i sao c\u00e1c d\u00f2ng s\u00f4ng kh\u00f4ng ch\u1ea3y theo \u0111\u01b0\u1eddng th\u1eb3ng<br>\nch\u1ee9ng minh \u0111\u1ecbnh l\u00fd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7 sbt<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song lop 4<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 51<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 3<br>\nvi\u1ebft ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song oxyz<br>\nc\u00e1c c\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nti\u1ebfp tuy\u1ebfn c song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng d song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song \u0111\u1ed3 th\u1ecb<br>\nt\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nc\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 9<br>\n\u0111\u1ecbnh ngh\u0129a kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1c b\u00e0i to\u00e1n ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nvi\u1ebft pttt c\u1ee7a \u0111\u1ed3 th\u1ecb song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nve hai duong thang song song<br>\ngi\u1ea3i to\u00e1n 9 b\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 c\u1eaft nhau<br>\nti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh lu\u1eadt v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh 3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nbai giang hai duong thang song song<br>\nkho\u1ea3ng c\u00e1ch c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nve duong thang song song<br>\n\u0111\u1ecbnh l\u00fd v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong oxyz<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nt\u1ecda \u0111\u1ed9 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u00ean \u0111e \u01a1 clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nxin cho yeu em thang ngay duong doi song gio<br>\ngiai bai tap toan lop 7 bai hai duong thang song song luyen tap<br>\n\u0111\u1ecbnh ngh\u0129a hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nti\u00eau \u0111\u1ec1 \u01a1-clit v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u1edbi 1 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nm\u1ed9t s\u00f3ng c\u01a1 h\u1ecdc lan truy\u1ec1n theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e0i gi\u1ea3ng \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nc\u00f4ng th\u1ee9c song song \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 c\u1eaft nhau<br>\ngiao an dien tu hai duong thang song song lop 4<br>\nanh v\u1edbi em nh\u01b0 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch cm hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ho\u00e0nh c\u00f3 d\u1ea1ng<br>\nph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi oy<br>\nph\u00e1t bi\u1ec3u ti\u00ean \u0111\u1ec1 \u01a1-clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng trong oxyz<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u1edbi 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi 2 m\u1eb7t ph\u1eb3ng<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng d1 d2 song song v\u1edbi nhau<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox trong oxyz<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song d\u1ea5u hi\u1ec7u<br>\nv\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad 2015<br>\nc\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song ox<br>\ntrong m\u1eb7t ph\u1eb3ng oxy cho 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nve duong thang song song trong cad<br>\nt\u00ednh ch\u1ea5t c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n l\u1edbp 4<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song khi nao<br>\nc\u00e1ch x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua m v\u00e0 song song v\u1edbi d<br>\n\u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n 9<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song kh\u00f4ng c\u00f3 \u0111i\u1ec3m chung<br>\nto\u00e1n 9 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1eb7t ph\u1eb3ng v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song trong kh\u00f4ng gian<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song ppt<br>\nc\u00e1ch t\u00ednh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\ntrong kh\u00f4ng gian 2 \u0111\u01b0\u1eddng th\u1eb3ng song song khi n\u00e0o<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng oxy<br>\nm\u1ed9t s\u00f3ng c\u01a1 h\u1ecdc lan truy\u1ec1n tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\ns\u00e1ch to\u00e1n l\u1edbp 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua a v\u00e0 song song v\u1edbi d<br>\nto\u00e1n 8 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nc\u00e1ch v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song b\u1eb1ng eke<br>\nn\u1ebfu 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 53<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng d song song<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng d v\u00e0 d&#8217; song song v\u1edbi nhau c\u00f3 bao nhi\u00eau ph\u00e9p t\u1ecbnh ti\u1ebfn bi\u1ebfn d th\u00e0nh d&#8217;<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong m\u1eb7t ph\u1eb3ng t\u1ecda \u0111\u1ed9<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 \u0111i\u1ec3m chung l\u00e0<br>\nbai tap ve hai duong thang song song<br>\nph\u01b0\u01a1ng tr\u00ecnh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nb\u00e0i t\u1eadp to\u00e1n 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nluy\u1ec7n t\u1eadp ti\u00ean \u0111\u1ec1 \u01a1 clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nb\u00e0i gi\u1ea3ng hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong tam gi\u00e1c<br>\nc\u00e1ch t\u00ecm pttt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\ngiai bai tap tien de oclit ve duong thang song song<br>\nm\u1ed9t s\u00f3ng c\u01a1 lan truy\u1ec1n tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\nh\u00e0m s\u1ed1 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng tr\u00f9ng nhau c\u00f3 song song kh\u00f4ng<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 b song song v\u1edbi nhau. h\u00e3y ch\u1ec9 ra m\u1ed9t ph\u00e9p t\u1ecbnh ti\u1ebfn<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng (d) qua a v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng \u03b4<br>\nchuyen de hai duong thang song song<br>\nh\u1ec7 s\u1ed1 g\u00f3c c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng qua 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nanh voi em nhu 2 duong thang song song<br>\nc\u00e1c d\u1ea1ng to\u00e1n v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch ki\u1ec3m tra hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song l\u1edbp 11<br>\n\u0111\u1ed3 th\u1ecb song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nn\u1ebfu 2 \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng song song<br>\nc\u00e1ch t\u00ednh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1edbp 4 v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nb\u00e0i gi\u1ea3ng \u0111\u01b0\u1eddng th\u1eb3ng song song \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nxoay \u0111\u1ed1i t\u01b0\u1ee3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng trong cad<br>\nm\u1ed9t nh\u00f3m 4 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ed3 th\u1ecb hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n 9 b\u00e0i 4 \u0111\u1ea1i s\u1ed1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ea5u hi\u1ec7u ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nbai tap chung minh 2 duong thang song song lop 11<br>\nhai duong thang vuong goc thi song song<br>\ns\u01a1 \u0111\u1ed3 t\u01b0 duy hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh l\u00fd c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nanh v\u00e0 em l\u00e0 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nduong thang song song voi mot duong thang cho truoc<br>\nc\u00e1ch v\u1ebd nhi\u1ec1u \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nc\u00e1c b\u00e0i t\u1eadp v\u1ec1 ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nbai hat hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nde duong thang song song voi truc ox<br>\n\u0111\u01b0\u1eddng th\u1eb3ng n\u00e0o song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng y=1-2x<br>\ncach chung minh 2 duong thang song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng l\u1edbp 12<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong \u0111\u1ed3 th\u1ecb<br>\nc\u00e1ch vi\u1ebft pt ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec h\u1ec7 s\u1ed1 g\u00f3c b\u1eb1ng nhau<br>\n2 pt \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1ec7nh v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong autocad<br>\n\u0111\u01b0\u1eddng th\u1eb3ng a song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng b<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song b\u00e0i 44<br>\nk\u00ed hi\u1ec7u hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nkhi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nanh v\u00e0 em nh\u01b0 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkhi n\u00e0o th\u00ec hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n h\u00ecnh 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song tr\u00ean \u0111\u1ed3 th\u1ecb<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi ox<br>\nto\u00e1n 11 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\ncho 9 \u0111\u01b0\u1eddng th\u1eb3ng trong \u0111\u00f3 kh\u00f4ng c\u00f3 2 \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0o song song<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song violet<br>\nhai \u0111\u01b0\u1eddng th\u1eb1ng song song<br>\nt\u00ecm tham s\u1ed1 m \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nto\u00e1n 7 \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nkhi 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u00ean \u0111\u1ec1 euclide v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nbai tap ve duong thang song song<br>\nn\u00eau ph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00f3 m\u1ea5y c\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\ntoan 8 bai 10 duong thang song song voi duong thang cho truoc<br>\nc\u00e1c c\u00e1ch \u0111\u1ec3 ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song vu\u00f4ng g\u00f3c<br>\nluy\u1ec7n t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nhai duong thang song song lop 7<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song vu\u00f4ng g\u00f3c v\u1edbi nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau khi n\u00e0o<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c oy<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng l\u1edbp 12<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng \u0111i qua 2 \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n1 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nb\u00e0i t\u1eadp v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 h\u1ec7 s\u1ed1 g\u00f3c b\u1eb1ng nhau<br>\nch\u00fang ta l\u00e0 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1eb7t ph\u1eb3ng song song v\u00e0 c\u00e1ch \u0111\u1ec1u 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00f3 m\u1ea5y c\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nsbt hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song trong tam gi\u00e1c<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 6<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\ntoan lop 4 bai ve hai duong thang song song<br>\nn\u1ebfu hai m\u1eb7t ph\u1eb3ng song song th\u00ec m\u1ecdi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nh\u00ecnh chi\u1ebfu song song c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong h\u00e0m s\u1ed1<br>\ngi\u1ea3i b\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nc\u00e1ch v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\ngi\u1ea3i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nluy\u1ec7n t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nl\u1eadp ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau<br>\ngiai bai tap toan lop 7 hinh hoc hai duong thang song song<br>\nph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh kho\u1ea3ng c\u00e1ch hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai d\u01b0\u1eddng th\u1eb3ng song song<br>\nvecto ph\u00e1p tuy\u1ebfn c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c oy<br>\nc\u00f4ng th\u1ee9c kho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau \u1edf v\u00f4 c\u1ef1c<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song g\u1eb7p nhau \u1edf \u0111\u00e2u<br>\ncm 1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng a song song v\u1edbi alpha n\u1ebfu<br>\nc\u00e1c b\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nduong thang song song voi mp<br>\n\u0111i\u1ec1u ki\u1ec7n 2 ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u1ebfu 1 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng song song th\u00ec<br>\nb\u00e0i 42 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u0103ng song song<br>\nt\u00ednh ch\u1ea5t 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\ndhnb hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng d&#8217; song song v\u1edbi d<br>\ngi\u1ea3i to\u00e1n 9 b\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng l\u1edbp 11<br>\nbai tap ve dau hieu nhan biet hai duong thang song song<br>\nb\u00e0i t\u1eadp v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n h\u00ecnh l\u1edbp 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai duong thang song song lop 11<br>\nti\u00ean \u0111\u1ec1 oclit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c th\u00ec song song v\u1edbi nhau<br>\nh\u00ecnh h\u1ecdc l\u1edbp 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong \u0111\u1ed3 th\u1ecb<br>\nv\u1edf b\u00e0i t\u1eadp to\u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh lu\u1eadt hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song a=a&#8217;<br>\nl\u00fd thuy\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nbai tap \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nkho\u1ea3ng c\u00e1ch t\u1eeb 1 \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ebfn m\u1eb7t ph\u1eb3ng song song<br>\n\u0111\u01b0\u01a1ng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nve hai duong thang song song lop 4<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edf b\u00e0i t\u1eadp<br>\nc\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi ox<br>\nc\u00e1ch t\u00ecm 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u1ecbnh l\u00fd ba \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm m \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau ch\u00e9o nhau<br>\nt\u00ecm c\u00e1c c\u1eb7p \u0111\u01b0\u1eddng th\u1eb3ng song song trong c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng sau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t th\u00ec song song<br>\nc\u00e1ch ch\u1ee9ng t\u1ecf hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song<br>\ngi\u1ea3i b\u00e0i to\u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ntc hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm m \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi d&#8217;<br>\nb\u00e0i v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u01a1ng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song nh\u01b0 th\u1ebf n\u00e0o<br>\nd\u1ea5u hi\u1ec7u ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi tr\u1ee5c ho\u00e0nh<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3<br>\ngi\u1ea3i b\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nphuong trinh 2 duong thang song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ho\u00e0nh<br>\nhai duong thang song song lop 4<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nvect\u01a1 n\u00e0o d\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t vect\u01a1 ch\u1ec9 ph\u01b0\u01a1ng c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ox<br>\nluyen tap hai duong thang song song lop 7<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ho\u00e0nh khi n\u00e0o<br>\nv\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngiai bai tap toan hinh lop 8 bai duong thang song song voi mot duong thang cho truoc<br>\nth\u00e0 l\u00e0m hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau<br>\nb\u00e1n \u0111\u1ea5t m\u1eb7t \u0111\u01b0\u1eddng th\u1eafng l\u1ee3i s\u00f4ng c\u00f4ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng l\u1edbp 11<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nto\u00e1n 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trang 51<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng d1 d2 song song v\u1edbi nhau<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1ea3ng cho tr\u01b0\u1edbc<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song h\u1ec7 s\u1ed1 g\u00f3c<br>\ntinh chat hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u t\u00ednh ch\u1ea5t \u0111\u1ecbnh l\u00fd c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nchung minh duong thang song song<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh l\u00ed hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nh\u00ecnh 11 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc violet<br>\nve nhieu duong thang song song trong cad<br>\nh\u00ecnh chi\u1ebfu song song c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng l\u00ean m\u1eb7t ph\u1eb3ng<br>\nc\u00f3 bao nhi\u00eau ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nto\u00e1n 9 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua a v\u00e0 song song v\u1edbi bc<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi 2 m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n l\u1edbp 4 trang 51<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau l\u00fd thuy\u1ebft<br>\ntoan 8 bai duong thang song song voi duong thang cho truoc<br>\n\u0111i\u1ec1u ki\u1ec7n song song c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nhai \u0111\u01b0\u1eddng th\u1ea3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song c\u00e1ch \u0111\u1ec1u<br>\n\u0111\u1ea1i d\u01b0\u01a1ng m\u00eanh m\u00f4ng s\u00f3ng th\u00e1ng n\u0103m ch\u1edd mong<br>\nch\u1ee9ng minh hai duong thang song song<br>\nph\u00e9p t\u1ecbnh ti\u1ebfn bi\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng th\u00e0nh \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4 trang 49<br>\ng\u00f3c gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f3<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u00eau c\u00e1ch nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00f4ng th\u1ee9c kho\u1ea3ng c\u00e1ch 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nt\u00ecm \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\ngi\u1ea3i b\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i to\u00e1n l\u1edbp 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngi\u00e1o \u00e1n b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nl\u00fd thuy\u1ebft \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song vu\u00f4ng g\u00f3c<br>\nbai tap chung minh hai duong thang song song lop 7<br>\nv\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng song song trong autocad 2007<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song violet<br>\nph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u1edbi 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t m\u1eb7t ph\u1eb3ng<br>\nchung minh hai duong thang song song<br>\n\u0111i\u1ec1u ki\u1ec7n c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nso\u1ea1n b\u00e0i \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\ngi\u1ea3 thi\u1ebft k\u1ebft lu\u1eadn 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch t\u00ecm \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u00e0 c\u00e1ch \u0111\u1ec1u 2 \u0111\u01b0\u1eddng th\u1eb3ng<br>\nto\u00e1n h\u00ecnh l\u1edbp 7 b\u00e0i 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00f3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song d v\u00e0 d&#8217;<br>\nt\u00ecm m \u0111\u1ec3 ti\u1ebfp tuy\u1ebfn t\u1ea1i m song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nh\u00ecnh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nd\u1ef1ng thi\u1ebft di\u1ec7n song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song to\u00e1n l\u1edbp 7<br>\ntoan hinh lop 7 bai 4 hai duong thang song song<br>\ncho tam gi\u00e1c abc qua a v\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng xy song song v\u1edbi bc<br>\ncho 2 vat dao dong dieu hoa doc theo hai duong thang song song voi truc ox<br>\nc\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau tr\u00f9ng nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11 l\u00fd thuy\u1ebft<br>\nc\u00e1ch d\u1ef1ng m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song \u0111\u01b0\u1eddng th\u1eb3ng<br>\nquan h\u1ec7 gi\u1eefa t\u00ednh vu\u00f4ng g\u00f3c v\u00e0 t\u00ecnh song song c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc<br>\nb\u00e0i 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song sbt<br>\nt\u00ednh ch\u1ea5t \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh l\u00ed v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba<br>\nsoan bai duong thang song song voi mot duong thang cho truoc<br>\nb\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\ngi\u1ea3i sgk to\u00e1n 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ns\u1eed d\u1ee5ng k\u1ebft qu\u1ea3 c\u1ee7a c\u00e1c \u0111o\u1ea1n th\u1eb3ng t\u01b0\u01a1ng \u1ee9ng t\u1ec9 l\u1ec7 \u0111\u1ec3 suy ra c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng song song t\u01b0\u01a1ng \u1ee9ng<br>\ngi\u1ea3i to\u00e1n b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song b\u00e0i t\u1eadp<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nb\u00e0i t\u1eadp 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nth\u01a1 v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng thang song song<br>\ncho tam gi\u00e1c abc m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song bc<br>\npt 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngiai bai tap toan hinh lop 7 bai hai duong thang song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong h\u00ecnh thang<br>\ng\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c th\u00ec song song v\u1edbi nhau<br>\nn\u1ebfu t\u00ednh ch\u1ea5t hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u1ebfp tuy\u1ebfn c\u1ee7a c song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 10<br>\nph\u00e1t bi\u1ec3u d\u1ea5u hi\u1ec7u \u0111\u1ecbnh l\u00fd nh\u1eadn bi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng song song v\u1edbi m\u1ed9t m\u1eb7t ph\u1eb3ng th\u00ec<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song d3 c\u1eaft d1 v\u00e0 d2 c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh l\u00e0<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song tr\u1ee5c oy<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi mp<br>\nb\u00e0i t\u1eadp ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft pttt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng l\u1edbp 11<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong oxy<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng d1 song song d2<br>\nth\u1ebf n\u00e0o l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 6<br>\nti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng d<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi nhau th\u00ec song song<br>\ncho \u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi tr\u1ee5c oy<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nto\u00e1n l\u1edbp 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 51<br>\nc\u00e1c b\u00e0i t\u1eadp v\u1ec1 ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song kh\u00f4ng m\u1ed9t tia hy v\u1ecdng<br>\nm\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song t\u1ea1o ra c\u1eb7p g\u00f3c trong c\u00f9ng ph\u00eda<br>\n\u0111i qua \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nl\u00fd thuy\u1ebft \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nlenh ve 2 duong thang song song trong autocad<br>\nti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn \u0111\u01b0\u1eddng tr\u00f2n song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00e1ch v\u1ebd 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nve 2 duong thang song song trong cad<br>\nkho\u1ea3ng c\u00e1ch c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 9<br>\nhai \u0111uong thang song song<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau<br>\ncho hai vat dao dong dieu hoa doc theo hai duong thang cung song song voi truc ox<br>\n\u0111\u1ecbnh lu\u1eadt 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nstt v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c song song<br>\nv\u00ed d\u1ee5 v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ntoan lop 7 hai duong thang song song<br>\nhi\u1ec7u 2 g\u00f3c trong c\u00f9ng ph\u00eda c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 22 \u0111\u1ed9. s\u1ed1 \u0111o g\u00f3c l\u1edbn l\u00e0<br>\ngiai bai tap toan 8 duong thang song song voi mot duong thang cho truoc<br>\n\u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nm\u1ed9t s\u00f3ng c\u01a1 h\u1ecdc lan truy\u1ec1n d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng v\u1edbi bi\u00ean \u0111\u1ed9 s\u00f3ng kh\u00f4ng \u0111\u1ed5i<br>\n\u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nto\u00e1n 9 b\u00e0i 4 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u1ee9ng d\u1ee5ng c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nmu\u1ed1n ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm m \u0111\u1ec3 ti\u1ebfp tuy\u1ebfn song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song khi a=a&#8217;<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi nhau l\u00e0<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng violet<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng song song a v\u00e0 b<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng song song v\u1edbi 1 m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai duong thang cheo nhau va hai duong thang song song<br>\nkh\u00e1i ni\u1ec7m v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngi\u00e1o \u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nt\u00ecm gi\u00e1 tr\u1ecb m \u0111\u1ec3 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i gi\u1ea3ng \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng trung b\u00ecnh c\u1ee7a h\u00ecnh thang th\u00ec song song<br>\nham so song song voi duong thang<br>\nd\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u \u0111\u1ecbnh l\u00ed c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nb\u00e0i gi\u1ea3ng v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nl\u1ec7nh v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nve duong thang song song cad<br>\n\u0111\u1ec3 \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song g\u1eb7p nhau \u1edf v\u00f4 c\u1ef1c<br>\nem v\u00e0 anh nh\u01b0 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau<br>\n\u0111k 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song b\u00e0i 42 trang 49<br>\n\u0111\u1ed3 th\u1ecb \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi tr\u1ee5c ox<br>\nt\u1ea1i sao hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nnh\u1eefng c\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song khi<br>\nph\u01b0\u01a1ng tr\u00ecnh song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nchuyen de hai duong thang song song lop 7<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 g\u1eb7p nhau kh\u00f4ng<br>\nm\u1ed9t s\u00f3ng c\u01a1 h\u1ecdc lan truy\u1ec1n d\u1ecdc theo m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh s\u00f3ng t\u1ea1i ngu\u1ed3n o l\u00e0<br>\nvi\u1ebft pt \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua 1 \u0111i\u1ec3m v\u00e0 song song<br>\nkhi n\u00e0o \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch gi\u1ea3i th\u00edch hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song k\u00ed hi\u1ec7u l\u00e0 g\u00ec<br>\ngi\u1ea3i b\u00e0i to\u00e1n l\u1edbp 4 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nn\u00eau m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua \u0111i\u1ec3m v\u00e0 song song<br>\ng\u00f3c t\u1ea1o b\u1edfi hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e0i to\u00e1n ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111k \u0111\u1ec3 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb1ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 song song n\u1ebfu<br>\nch\u1ee9ng minh ba \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ngi\u1ea3i to\u00e1n 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau \u1edf \u0111\u00e2u<br>\n\u0111\u01b0\u1eddng th\u1eafng l\u1ee3i s\u00f4ng c\u00f4ng th\u00e1i nguy\u00ean<br>\nt\u00ecm c\u00e1c c\u1eb7p \u0111\u01b0\u1eddng th\u1eb3ng song song trong c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng cho sau \u0111\u00e2y<br>\nb\u00e0i t\u1eadp ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u1ec1n \u0111\u1ec1 \u01a1 clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nb\u00e0i t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7 violet<br>\nb\u00e0i t\u1eadp ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nc\u00e1 v\u01b0\u1ee3t s\u00f3ng \u0111\u00e0o ba th\u00e1ng \u0111\u00fang ch\u00ednh \u0111\u01b0\u1eddng bi\u1ebfn h\u00f3a \u0111\u1ec3 th\u00e0nh c\u00f4ng<br>\nph\u00e9p chi\u1ebfu song song bi\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng th\u00e0nh<br>\ngiao an hai duong thang song song lop 4<br>\ns\u1ed1 \u0111i\u1ec3m chung c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u01b0\u01a1ng ph\u00e1p ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song sgk<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trang 49<br>\nph\u00e1t bi\u1ec3u ti\u00ean \u0111\u1ec1 \u01a1 c\u01a1 l\u00edt v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song khi v\u00e0 ch\u1ec9 khi<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song tr\u1ee5c tung<br>\nnh\u1eefng c\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nph\u00e1t bi\u1ec3u t\u00ednh ch\u1ea5t c\u1ee7a ba \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi tr\u1ee5c ho\u00e0nh khi<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 ti\u1ebfp x\u00fac v\u1edbi m\u1eb7t c\u1ea7u<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 9<br>\nso\u1ea1n to\u00e1n 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nduong thang song song voi mot duong thang cho truoc violet<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0 sao<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 \u0111i\u1ec3m chung hay kh\u00f4ng<br>\nthe nao la duong thang song song voi duong thang<br>\nbai giang hai duong thang cheo nhau va hai duong thang song song<br>\nc\u1eb7p \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau t\u1ea1i v\u00f4 c\u1ef1c<br>\n\u0111\u1ed3 th\u1ecb song song \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00e1ch nh\u1eadn bi\u1ebft \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ednh ch\u1ea5t \u0111\u1ecbnh l\u00fd c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 vu\u00f4ng g\u00f3c<br>\nm\u1ed9t t\u00e0u ch\u1ea1y tr\u00ean s\u00f4ng theo \u0111\u01b0\u1eddng th\u1eb3ng<br>\nquan h\u1ec7 3 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch \u0111\u1ec3 ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch nh\u1eadn bi\u1ebft \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 mp song song<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong cad<br>\nluy\u1ec7n t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7 violet<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m g\u00ec<br>\nluy\u1ec7n t\u1eadp hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec<br>\nc\u00e1ch ch\u1ee9ng minh hai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nb\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\n\u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi d&#8217; khi n\u00e0o<br>\nhai duong thang song song la hai duong thang<br>\nchuy\u00ean \u0111\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng trong kh\u00f4ng gian quan h\u1ec7 song song<br>\nsong song l\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng<br>\nc\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u00e0<br>\nt\u00ednh ch\u1ea5t c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nto\u00e1n 7 ti\u00ean \u0111\u1ec1 \u01a1clit v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nb\u00e0i t\u1eadp ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 11<br>\nph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng d v\u00e0 c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng d1 v\u00e0 d2<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian oxyz<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng d1 v\u00e0 d2 song song v\u1edbi nhau<br>\nb\u00e0i 4 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\nv\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nti\u00ean \u0111\u1ec1 \u01a1 c\u01a1 l\u00edt v\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song sbt<br>\nchung minh 2 duong thang song song<br>\ngi\u1ea3i to\u00e1n l\u1edbp 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n5 c\u00e1ch ch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\n\u0111\u01b0\u1eddng th\u1eb3ng qua b song song v\u1edbi am c\u1eaft mn \u1edf e<br>\nt\u00ednh ch\u1ea5t c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nc\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nm\u1ed9t s\u00f3ng c\u01a1 lan truy\u1ec1n tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng t\u1eeb \u0111i\u1ec3m o \u0111\u1ebfn \u0111i\u1ec3m m<br>\nh\u1ec7 s\u1ed1 g\u00f3c 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nthe nao la hai duong thang song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song c\u00f3 c\u1eaft nhau kh\u00f4ng<br>\nkho\u1ea3ng c\u00e1ch gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nch\u1ee9ng minh 2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec vu\u00f4ng g\u00f3c<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song trong kh\u00f4ng gian<br>\nv\u1ee1 \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc s\u00f4ng \u0111\u00e0 th\u00e1ng 6\/2018<br>\nb\u00e0i t\u1eadp \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\ngi\u1ea3i sbt to\u00e1n 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho 2 \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 b song song v\u1edbi nhau<br>\ngi\u1ea3i \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1ed9t c\u00e1t tuy\u1ebfn<br>\nph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn song song \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e0i gi\u1ea3ng hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nto\u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 4<br>\nch\u1ee9ng minh 2 \u0111uong thang song song<br>\nh\u00ecnh h\u1ecdc kh\u00f4ng gian 11 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau<br>\nv\u00ed d\u1ee5 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nl\u1eadp pttt song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\ngi\u1ea3i sgk to\u00e1n 7 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm m \u0111\u1ec3 m\u1eb7t ph\u1eb3ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi hai m\u1eb7t ph\u1eb3ng<br>\nph\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp tuy\u1ebfn c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\nb\u00e0i 4 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau violet<br>\nvi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng<br>\n\u0111\u01b0\u1eddng th\u1eb3ng song song c\u1eaft nhau tr\u00f9ng nhau<br>\nv\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nn\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng a song song v\u1edbi m\u1eb7t ph\u1eb3ng<br>\nc\u00e1c c\u00e1ch ch\u1ee9ng minh \u0111\u01b0\u1eddng th\u1eb3ng song song m\u1eb7t ph\u1eb3ng<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 12<br>\nlenh ve duong thang song song voi duong thang cho truoc trong cad<br>\n2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec a=a&#8217;<br>\nb\u00e0i to\u00e1n hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\ncho hai \u0111\u01b0\u1eddng th\u1eb3ng song song a v\u00e0 a&#8217;<br>\ngi\u1ea3i sbt to\u00e1n 7 b\u00e0i hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nt\u00ecm c\u00e1c c\u1eb7p \u0111\u01b0\u1eddng th\u1eb3ng song song trong h\u00ecnh 10 v\u00e0 gi\u1ea3i th\u00edch v\u00ec sao ch\u00fang song song<br>\nn\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nchuy\u00ean \u0111\u1ec1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau<br>\n\u0111\u1ecbnh l\u00fd v\u1ec1 2 \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nc\u00e1ch v\u1ebd hai \u0111\u01b0\u1eddng th\u1eb3ng song song l\u1edbp 7<br>\nhai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o v\u00e0 hai \u0111\u01b0\u1eddng th\u1eb3ng song song<br>\nti\u00ean \u0111\u1ec1 \u01a1-clit<br>\n\u01a1-clit<br>\nd\u1ea1ng ph\u00e1t bi\u1ec3u kh\u00e1c c\u1ee7a \u201cti\u00ean \u0111\u1ec1 \u01a1-cl\u00edt\u201d l\u00e0<br>\no-clit<br>\n\u01a1 &#8211; clit<br>\nto\u00e1n l\u1edbp 7 b\u00e0i 5 ti\u00ean \u0111\u1ec1 \u01a1-clit<br>\nti\u00ean \u0111\u1ec3 \u01a1- cl\u00edt<br>\nluyen tap bai tien de o-clit<br>\n\u01a1-cl\u00edt<br>\nti\u00eau \u0111\u1ec1 \u01a1-clit<br>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Trong h\u00ecnh h\u1ecdc, c\u00e1c nh\u00e0 to\u00e1n h\u1ecdc lu\u00f4n gi\u00e0nh s\u1ef1 quan t\u00e2m v\u00e0 nghi\u00ean c\u1ee9u v\u1ec1 c\u00e1c \u0111\u00f3i t\u01b0\u1ee3ng nh\u01b0 m\u1eb7t ph\u1eb3ng, \u0111i\u1ec3m v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng. \u0110\u00e2y l\u00e0 nh\u1eefng n\u1ed9i dung mang t\u00ednh ti\u1ec1n \u0111\u1ec1 gi\u00fap x\u00e2y d\u1ee5ng n\u1ed9i dung ki\u1ebfn th\u1ee9c v\u1ec1 to\u00e1n h\u00ecnh. Trong \u0111\u00f3 nh\u00e0 to\u00e1n [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[9,4],"tags":[],"class_list":["post-2553","post","type-post","status-publish","format-standard","hentry","category-toan-hoc","category-trung-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=2553"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2553\/revisions"}],"predecessor-version":[{"id":25712,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2553\/revisions\/25712"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}