{"id":7499,"date":"2021-11-20T13:55:11","date_gmt":"2021-11-20T06:55:11","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=7499"},"modified":"2021-11-20T15:09:08","modified_gmt":"2021-11-20T08:09:08","slug":"neu-ban-dung-dinh-de-dong-ghep-ba-thanh-go-thanh-hinh-tam-giac-thi-hinh-dang-cua-khung-go-nay-se-khong-thay-doi-do-la-nguyen-li-tinh-on-dinh-cua-hinh-tam-giac","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/neu-ban-dung-dinh-de-dong-ghep-ba-thanh-go-thanh-hinh-tam-giac-thi-hinh-dang-cua-khung-go-nay-se-khong-thay-doi-do-la-nguyen-li-tinh-on-dinh-cua-hinh-tam-giac\/","title":{"rendered":"N\u1ebfu b\u1ea1n d\u00f9ng \u0111inh \u0111\u1ec3 \u0111\u00f3ng gh\u00e9p ba thanh g\u1ed7 th\u00e0nh h\u00ecnh tam gi\u00e1c, th\u00ec h\u00ecnh d\u00e1ng c\u1ee7a khung g\u1ed7 n\u00e0y s\u1ebd kh\u00f4ng thay \u0111\u1ed5i. \u0110\u00f3 l\u00e0 nguy\u00ean l\u00ed \u201ct\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u00ecnh tam gi\u00e1c\u201d."},"content":{"rendered":"\n<p>Th\u1ebf nh\u01b0ng n\u1ebfu d\u00f9ng \u0111inh \u0111\u1ec3 \u0111\u00f3ng gh\u00e9p b\u1ed1n thanh g\u1ed7 th\u00e0nh m\u1ed9t c\u00e1i khung c\u00f3 b\u1ed1n c\u1ea1nh l\u00e0 ABCD, h\u00ecnh d\u00e1ng c\u1ee7a khung c\u00f3 b\u1ed1n c\u1ea1nh r\u1ea5t d\u1ec5 b\u1ecb bi\u1ebfn d\u1ea1ng. V\u1eady h\u00ecnh b\u1ed1n c\u1ea1nh kh\u00f4ng c\u00f3 t\u00ednh \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p>N\u1ebfu mu\u1ed1n khung b\u1ed1n c\u1ea1nh n\u00e0y kh\u00f4ng b\u1ecb x\u1ed9c x\u1ec7ch, ta l\u1ea1i s\u1eed d\u1ee5ng nguy\u00ean l\u00ed t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a tam gi\u00e1c, d\u00f9ng m\u1ed9t thanh g\u1ed7 \u0111\u00f3ng thanh g\u1ed7 \u0111\u00f3ng c\u1ed1 \u0111\u1ecbnh c\u00e1c \u0111\u1ec9nh \u0111\u1ed1i nhau nh\u01b0 \u1edf c\u00e1c \u0111i\u1ec3m A, C \u0111\u1ec3 chia th\u00e0nh hai h\u00ecnh tam gi\u00e1c l\u00e0 \u0111\u01b0\u1ee3c. Ch\u00fang ta th\u01b0\u1eddng th\u1ea5y khi ng\u01b0\u1eddi ta \u0111\u00f3ng c\u00e1c c\u00e1nh c\u1eeda ch\u1ea5n song, th\u01b0\u1eddng c\u00f3 \u0111\u00f3ng th\u00eam thanh ch\u00e9o g\u00f3c l\u00e0 v\u00ec l\u00ed do \u0111\u00f3. Kh\u00f4ng ch\u1ec9 c\u00e1c h\u00ecnh b\u1ed1n c\u1ea1nh kh\u00f4ng c\u00f3 t\u00ednh \u1ed5n \u0111\u1ecbnh m\u00e0 \u1edf c\u00e1c h\u00ecnh c\u00f3 s\u1ed1 c\u1ea1nh l\u1edbn h\u01a1n b\u1ed1n c\u0169ng kh\u00f4ng c\u00f3 t\u00ednh \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n mu\u1ed1n d\u00f9ng c\u00e1c thanh g\u1ed7 \u0111\u1ec3 gh\u00e9p th\u00e0nh m\u1ed9t khung l\u1ed3i ABCDEF nh\u01b0 \u1edf h\u00ecnh b\u00ean li\u1ec7u b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng ba thanh g\u1ed7 \u0111\u1ec3 gia c\u1ed1 l\u00e0m n\u00f3 kh\u00f4ng x\u1ed9c x\u1ec7ch \u0111\u01b0\u1ee3c kh\u00f4ng?<\/p>\n\n\n\n<p>Theo nguy\u00ean l\u00ed \u201ct\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u00ecnh tam gi\u00e1c\u201d th\u00ec v\u1ea5n \u0111\u1ec1 n\u00eau tr\u00ean kh\u00f4ng kh\u00f3 gi\u1ea3i quy\u1ebft l\u1eafm. Tr\u00ean h\u00ecnh v\u1ebd \u0111\u00e3 n\u00eau l\u00ean c\u00e1c c\u00e1ch gia c\u1ed1 \u0111\u1ec3 khung g\u1ed7 \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh.<\/p>\n\n\n\n<p>Tr\u00ean th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u c\u00e1ch gia c\u1ed1 kh\u00e1c, b\u1ea1n th\u1eed ngh\u0129 xem c\u00e1c gi\u1ea3i ph\u00e1p kh\u00e1c.<\/p>\n\n\n\n<p>T\u1eeb kho\u00e1: H\u00ecnh tam gi\u00e1c; H\u00ecnh nhi\u1ec1u c\u1ea1nh.<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Th\u1ebf nh\u01b0ng n\u1ebfu d\u00f9ng \u0111inh \u0111\u1ec3 \u0111\u00f3ng gh\u00e9p b\u1ed1n thanh g\u1ed7 th\u00e0nh m\u1ed9t c\u00e1i khung c\u00f3 b\u1ed1n c\u1ea1nh l\u00e0 ABCD, h\u00ecnh d\u00e1ng c\u1ee7a khung c\u00f3 b\u1ed1n c\u1ea1nh r\u1ea5t d\u1ec5 b\u1ecb bi\u1ebfn d\u1ea1ng. V\u1eady h\u00ecnh b\u1ed1n c\u1ea1nh kh\u00f4ng c\u00f3 t\u00ednh \u1ed5n \u0111\u1ecbnh. N\u1ebfu mu\u1ed1n khung b\u1ed1n c\u1ea1nh n\u00e0y kh\u00f4ng b\u1ecb x\u1ed9c x\u1ec7ch, ta l\u1ea1i s\u1eed d\u1ee5ng [&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":[15,9],"tags":[],"class_list":["post-7499","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-toan-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7499","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=7499"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7499\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}