{"id":2647,"date":"2021-10-14T21:16:47","date_gmt":"2021-10-14T14:16:47","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=2647"},"modified":"2021-10-14T22:11:10","modified_gmt":"2021-10-14T15:11:10","slug":"ly-thuyet-va-bai-ta%cc%a3p-ve-tia-ho%cc%a3c-toan-6-cung-vietlearn","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/ly-thuyet-va-bai-ta%cc%a3p-ve-tia-ho%cc%a3c-toan-6-cung-vietlearn\/","title":{"rendered":"Ly\u0301 thuy\u00ea\u0301t va\u0300 ba\u0300i t\u00e2\u0323p v\u00ea\u0300 tia -Ho\u0323c Toa\u0301n 6 cu\u0300ng Vietlearn"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi ti\u0300m hi\u00ea\u0309u v\u00ea\u0300 \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng \u0111i qua hai \u0111i\u00ea\u0309m \u01a1\u0309 ba\u0300i tr\u01b0\u01a1\u0301c, chu\u0301ng ta se\u0303 ti\u0300m hi\u00ea\u0309u n\u00f4\u0323i dung ki\u00ea\u0301n th\u01b0\u0301c m\u01a1\u0301i: tia. Tia la\u0300 m\u00f4\u0323t trong ca\u0301c kha\u0301i ni\u00ea\u0323m c\u01a1 ba\u0309n cu\u0309a hi\u0300nh ho\u0323c Toa\u0301n 6. Tia la\u0300 gi\u0300? Th\u00ea\u0301 na\u0300o go\u0323i la\u0300 tia? Th\u00ea\u0301 na\u0300o la\u0300 tia tru\u0300ng nhau, tia \u0111\u00f4\u0301i nhau,\u2026? T\u00e2\u0301t ca\u0309 nh\u01b0\u0303ng ki\u00ea\u0301n th\u01b0\u0301c v\u00ea\u0300 tia l\u01a1\u0301p 6 se\u0303 \u0111\u01b0\u01a1\u0323c Vietlearn gia\u0309i nghi\u0303a trong ba\u0300i vi\u00ea\u0301t sau \u0111\u00e2y:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00ea\u0323 th\u00f4\u0301ng ly\u0301 thuy\u00ea\u0301t<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tia<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u0300nh 1<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ta co\u0301: \u0110i\u00ea\u0309m O thu\u00f4\u0323c \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng xy. O chia xy tha\u0300nh 2 ph\u00e2\u0300n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">=&gt; Ox la\u0300 tia, Oy la\u0300 tia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0u y\u0301: khi \u0111o\u0323c hay vi\u00ea\u0301t t\u00ean tia pha\u0309i vi\u00ea\u0301t g\u00f4\u0301c tia tr\u01b0\u01a1\u0301c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u0300nh 2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ta bi\u00ea\u0309u di\u00ea\u0303n tia Ax tr\u00ean \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng x b\u0103\u0300ng ca\u0301ch cho\u0323n g\u00f4\u0301c tia la\u0300 A tr\u00ean \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng. A \u0111\u01b0\u01a1\u0323c ve\u0303 ro\u0303 ra\u0300ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Theo hi\u0300nh 2, tia Ax kh\u00f4ng bi\u0323 gi\u01a1\u0301i ha\u0323n v\u00ea\u0300 phi\u0301a x.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tia \u0111\u00f4\u0301i nhau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hai tia chung g\u00f4\u0301c tr\u00ean 1 \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng la\u0300 hai tia \u0111\u00f4\u0301i nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u0300nh 3<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2 tia Ox va\u0300 Oy \u0111\u00ea\u0300u thu\u00f4\u0323c \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng xy va\u0300 co\u0301 chung g\u00f4\u0301c O n\u00ean Ox va\u0300 Oy la\u0300 2 tia \u0111\u00f4\u0301i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tia tru\u0300ng nhau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u0300nh 4<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng x, ta co\u0301 2 tia Ax va\u0300 Bx. Ax va\u0300 AB la\u0300 2 tia tru\u0300ng nhau. Tia Ax chi\u0301nh la\u0300 tia AB. Tia AB chi\u0301nh la\u0300 tia Ax.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chu\u0301 y\u0301: 2 tia kh\u00f4ng tru\u0300ng nhau \u0111\u01b0\u01a1\u0323c go\u0323i la\u0300 2 tia ph\u00e2n bi\u00ea\u0323t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110o\u0323c th\u00eam: Ho\u0323c Toa\u0301n 6 cu\u0300ng Vietlearn: Ki\u00ea\u0301n th\u01b0\u0301c v\u00ea\u0300 \u0111oa\u0323n th\u0103\u0309ng &amp; \u0111o \u0111\u00f4\u0323 da\u0300i \u0111oa\u0323n th\u0103\u0309ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Da\u0323ng ba\u0300i t\u00e2\u0323p<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Da\u0323ng 1: Nh\u00e2\u0323n da\u0323ng tia, tia tru\u0300ng nhau, tia \u0111\u00f4\u0301i nhau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng pha\u0301p la\u0300m: S\u01b0\u0309 du\u0323ng \u0111i\u0323nh nghi\u0303a v\u00ea\u0300 tia, tia tru\u0300ng nhau, tia \u0111\u00f4\u0301i nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u0301 du\u0323: Xa\u0301c \u0111i\u0323nh ca\u0301c tia, ca\u0301c tia \u0111\u00f4\u0301i nhau, ca\u0301c tia tru\u0300ng nhau d\u01b0\u01a1\u0301i hi\u0300nh sau. Tra\u0309 l\u01a1\u0300i ca\u0301c c\u00e2u ho\u0309i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a, Tia Oy va\u0300 By co\u0301 tru\u0300ng nhau kh\u00f4ng? Vi\u0300 sao?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">b, Tia Ox va\u0300 tia Ax co\u0301 tru\u0300ng nhau kh\u00f4ng? Vi\u0300 sao?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">c, K\u00ea\u0309 t\u00ean ca\u0301c tia \u0111\u00f4\u0301i nhau trong hi\u0300nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u0300nh minh ho\u0323a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ca\u0301c tia tr\u00ean hi\u0300nh la\u0300: OB, Oy, OA, Ox, By, Ax<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tia OB tru\u0300ng v\u01a1\u0301i tia Oy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tia OA tru\u0300ng v\u01a1\u0301i tia Ox.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tia Oy va\u0300 By kh\u00f4ng tru\u0300ng nhau vi\u0300 kh\u00f4ng chung g\u00f4\u0301c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tia Ox va\u0300 Ax kh\u00f4ng tru\u0300ng nhau vi\u0300 kh\u00f4ng chung g\u00f4\u0301c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong hi\u0300nh kh\u00f4ng co\u0301 tia \u0111\u00f4\u0301i nhau vi\u0300 kh\u00f4ng co\u0301 ca\u0301c tia na\u0300o cu\u0300ng chung g\u00f4\u0301c va\u0300 ta\u0323o tha\u0300nh 1 \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Da\u0323ng 2: Ti\u0300m \u0111i\u00ea\u0309m n\u0103\u0300m gi\u01b0\u0303a 2 \u0111i\u00ea\u0309m<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng pha\u0301p la\u0300m: S\u01b0\u0309 du\u0323ng ki\u00ea\u0301n th\u01b0\u0301c 2 tia \u0111\u00f4\u0301i nhau thi\u0300 g\u00f4\u0301c cu\u0309a 2 tia la\u0300 \u0111i\u00ea\u0309m n\u0103\u0300m gi\u01b0\u0303a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u0301 du\u0323: Tr\u00ean tia x co\u0301 ca\u0301c \u0111i\u00ea\u0309m M, N, P, Q nh\u01b0 hi\u0300nh. Tra\u0309 l\u01a1\u0300i ca\u0301c c\u00e2u ho\u0309i sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a, N co\u0301 n\u0103\u0300m gi\u01b0\u0303a M va\u0300 P kh\u00f4ng?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">b, Q co\u0301 n\u0103\u0300m gi\u01b0\u0303a M va\u0300 N kh\u00f4ng?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u0300nh minh ho\u0323a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a, N n\u0103\u0300m gi\u01b0\u0303a M va\u0300 P vi\u0300 NM la\u0300 tia \u0111\u00f4\u0301i cu\u0309a tia NP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">b, Q kh\u00f4ng n\u0103\u0300m gi\u01b0\u0303a M va\u0300 N vi\u0300 QM va\u0300 QN la\u0300 2 tia tru\u0300ng nhau (\u0111\u00ea\u0300u chung g\u00f4\u0301c Q).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Luy\u00ea\u0323n t\u00e2\u0323p<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 1: Ve\u0303 \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng x, l\u00e2\u0301y \u0111i\u00ea\u0309m A b\u00e2\u0301t ki\u0300 tr\u00ean \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng x.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a, Xa\u0301c \u0111i\u0323nh vi\u0323 tri\u0301 cu\u0309a B va\u0300 C bi\u00ea\u0301t r\u0103\u0300ng tia AB va\u0300 tia AC \u0111\u00f4\u0301i nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">b, Xa\u0301c \u0111i\u0323nh vi\u0323 tri\u0301 cu\u0309a D bi\u00ea\u0301t r\u0103\u0300ng AB va\u0300 AD la\u0300 2 tia tru\u0300ng nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gia\u0309i ba\u0300i 1<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ba\u0300i 2: Hoa\u0300n thi\u00ea\u0323n ca\u0301c c\u00e2u sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a, 3 \u0111i\u00ea\u0309m M, N, P thu\u00f4\u0323c \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng x trong \u0111o\u0301 N n\u0103\u0300m gi\u01b0\u0303a M va\u0300 P:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2026va\u0300 NP la\u0300 2 tia \u0111\u00f4\u0301i nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MN va\u0300 MP la\u0300 2 tia\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MN va\u0300 NP la\u0300 2 tia\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">b, \u0110i\u00ea\u0309m E n\u0103\u0300m tr\u00ean \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng MQ n\u00ean E la\u0300 g\u00f4\u0301c chung cu\u0309a\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">c, Hi\u0300nh \u0111\u01b0\u01a1\u0323c ta\u0323o ra t\u01b0\u0300 \u0111i\u00ea\u0309m A va\u0300 m\u00f4\u0323t ph\u00e2\u0300n \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng \u0111\u01b0\u01a1\u0323c chia ra t\u01b0\u0300 \u0111i\u00ea\u0309m A go\u0323i la\u0300\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i gia\u0309i:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a, 3 \u0111i\u00ea\u0309m M, N, P thu\u00f4\u0323c x ta co\u0301:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NM va\u0300 NP la\u0300 2 tia \u0111\u00f4\u0301i nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MN va\u0300 MP la\u0300 2 tia tru\u0300ng nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MN va\u0300 NP la\u0300 2 tia kh\u00f4ng tru\u0300ng nhau\/ kh\u00f4ng \u0111\u00f4\u0301i nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">b, E la\u0300 g\u00f4\u0301c chung cu\u0309a 2 tia EQ va\u0300 EM.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">c, Hi\u0300nh \u0111\u01b0\u01a1\u0323c ta\u0323o ra t\u01b0\u0300 \u0111i\u00ea\u0309m A va\u0300 m\u00f4\u0323t ph\u00e2\u0300n \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng \u0111\u01b0\u01a1\u0323c chia ra t\u01b0\u0300 \u0111i\u00ea\u0309m A go\u0323i la\u0300 tia g\u00f4\u0301c A.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vietlearn hy vo\u0323ng v\u01a1\u0301i ba\u0300i vi\u00ea\u0301t tr\u00ean ca\u0301c ba\u0323n ho\u0323c sinh \u0111a\u0303 co\u0301 \u0111\u00e2\u0300y \u0111u\u0309 ki\u00ea\u0301n th\u01b0\u0301c v\u00ea\u0300 tia l\u01a1\u0301p 6. Tia l\u01a1\u0301p 6 kh\u00f4ng h\u00ea\u0300 kho\u0301 pha\u0309i kh\u00f4ng na\u0300o? Ghe\u0301 qua blog Vietlearn \u0111\u00ea\u0309 theo do\u0303i ca\u0301c ba\u0300i ho\u0323c ti\u00ea\u0301p theo. Tham kha\u0309o kho\u0301a ho\u0323c tr\u01b0\u0323c tuy\u00ea\u0301n m\u00f4n Toa\u0301n t\u01b0\u0300 l\u01a1\u0301p 1 \u0111\u00ea\u0301n l\u01a1\u0301p 12 cu\u0309a Vietlearn. \u0110\u00ea\u0301n v\u01a1\u0301i Vietlearn, ba\u0323n se\u0303 \u0111\u01b0\u01a1\u0323c tra\u0309i nghi\u00ea\u0323m l\u00f4\u0323 tri\u0300nh ho\u0323c ri\u00eang bi\u00ea\u0323t t\u01b0\u0300 k\u00ea\u0301t qua\u0309 ph\u00e2n ti\u0301ch cu\u0309a AI. M\u00f4n Toa\u0301n se\u0303 kh\u00f4ng co\u0300n la\u0300 n\u00f4\u0303i s\u01a1\u0323 ha\u0303i khi co\u0301 Vietlearn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u0301 m\u00e2\u0323t Toa\u0301n ho\u0323c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nha\u0300 tha\u0301m hi\u00ea\u0309m \u0111i theo hi\u0300nh vu\u00f4ng nh\u01b0ng ta\u0323i sao la\u0323i bi\u00ea\u0301n tha\u0300nh hi\u0300nh tam gia\u0301c?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00f4\u0323t nha\u0300 tha\u0301m hi\u00ea\u0309m no\u0301i r\u0103\u0300ng \u00f4ng \u0111i v\u00ea\u0300 phi\u0301a Nam 2000m. Sau \u0111o\u0301, nha\u0300 tha\u0301m hi\u00ea\u0309m \u0111i v\u00ea\u0300 phi\u0301a \u0110\u00f4ng 2000m. R\u00f4\u0300i nha\u0300 tha\u0301m hi\u00ea\u0309m \u0111i v\u00ea\u0300 phi\u0301a B\u0103\u0301c th\u00eam 2000m n\u01b0\u0303a. K\u00ea\u0301t qua\u0309 nha\u0300 tha\u0301m hi\u00ea\u0309m la\u0323i tr\u01a1\u0309 v\u00ea\u0300 \u0111u\u0301ng vi\u0323 tri\u0301 ban \u0111\u00e2\u0300u. Nghe v\u00e2\u0323y, mo\u0323i ng\u01b0\u01a1\u0300i \u0111\u00ea\u0300u kh\u00f4ng tin nghi\u0303 r\u0103\u0300ng \u00f4ng pha\u0309i \u0111\u00ea\u0301n phi\u0301a \u0110\u00f4ng cu\u0309a n\u01a1i xu\u00e2\u0301t pha\u0301t. Ch\u00f4\u0303 \u00f4ng \u0111\u01b0\u0301ng pha\u0309i ca\u0301ch \u0111i\u00ea\u0309m xu\u00e2\u0301t pha\u0301t 2000m. Sau khi nha\u0300 tha\u0301m hi\u00ea\u0309m gia\u0309i thi\u0301ch mo\u0323i ng\u01b0\u01a1\u0300i \u0111\u00ea\u0300u c\u00f4ng nh\u00e2\u0323n \u00f4ng \u0111u\u0301ng. Ba\u0323n co\u0301 ly\u0301 gia\u0309i \u0111\u01b0\u01a1\u0323c ta\u0323i sao kh\u00f4ng?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ly\u0301 gia\u0309i<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ca\u0301c ba\u0323n ha\u0303y ve\u0303 ho\u0103\u0323c t\u01b0\u01a1\u0309ng t\u01b0\u01a1\u0323ng \u0111\u01b0\u01a1\u0300ng \u0111i cu\u0309a nha\u0300 tha\u0301m hi\u00ea\u0309m l\u00ean m\u00f4\u0323t t\u01a1\u0300 gi\u00e2\u0301y. \u0110\u01b0\u01a1\u0300ng \u0111i cu\u0309a nha\u0300 tha\u0301m hi\u00ea\u0309m se\u0303 la\u0300 hi\u0300nh vu\u00f4ng. B\u00ea\u0300 m\u0103\u0323t tra\u0301i \u0111\u00e2\u0301t kh\u00f4ng gi\u00f4\u0301ng nh\u01b0 b\u00ea\u0300 m\u0103\u0323t t\u01a1\u0300 gi\u00e2\u0301y. T\u01a1\u0300 gi\u00e2\u0301y la\u0300 m\u00f4\u0323t m\u0103\u0323t ph\u0103\u0309ng va\u0300 tra\u0301i \u0111\u00e2\u0301t hi\u0300nh c\u00e2\u0300u. B\u00ea\u0300 m\u0103\u0323t tra\u0301i \u0111\u00e2\u0301t kh\u00f4ng pha\u0309i m\u0103\u0323t ph\u0103\u0309ng. N\u00ea\u0301u chu\u0301ng ta ve\u0303 \u0111\u01b0\u01a1\u0300ng \u0111i cu\u0309a nha\u0300 tha\u0301m hi\u00ea\u0309m tr\u00ean m\u0103\u0323t hi\u0300nh c\u00e2\u0300u se\u0303 kh\u00f4ng cho ra hi\u0300nh vu\u00f4ng nh\u01b0 tr\u00ean t\u01a1\u0300 gi\u00e2\u0301y. \u0110o\u0301 la\u0300 hi\u0300nh b\u00f4\u0301n ca\u0323nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e2\u0323y ta\u0323i sao \u0111\u01b0\u01a1\u0300ng \u0111i cu\u0309a nha\u0300 tha\u0301m hi\u00ea\u0309m la\u0323i la\u0300 hi\u0300nh tam gia\u0301c? Ly\u0301 gia\u0309i cho \u0111i\u00ea\u0300u na\u0300y, do nha\u0300 tha\u0301m hi\u00ea\u0309m xu\u00e2\u0301t pha\u0301t t\u01b0\u0300 B\u0103\u0301c C\u01b0\u0323c vi\u0300 v\u00e2\u0323y \u0111\u01b0\u01a1\u0300ng \u0111i b\u00f4\u0301n ca\u0323nh cu\u0309a \u00f4ng bi\u00ea\u0301n tha\u0300nh hi\u0300nh tam gia\u0301c. K\u00ea\u0301t qua\u0309 nha\u0300 tha\u0301m hi\u00ea\u0309m la\u0323i tr\u01a1\u0309 v\u00ea\u0300 vi\u0323 vi\u0323 tri\u0301 ban \u0111\u00e2\u0300u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00ea\u0301t lu\u00e2\u0323n: Do s\u01b0\u0323 kha\u0301c nhau v\u00ea\u0300 ti\u0301nh ch\u00e2\u0301t cu\u0309a m\u0103\u0323t ph\u0103\u0309ng va\u0300 m\u0103\u0323t c\u00e2\u0300u va\u0300 tra\u0301i \u0111\u00e2\u0301t r\u00e2\u0301t l\u01a1\u0301n n\u00ean chi\u0309 pha\u0323m vi nho\u0309 tr\u00ean tra\u0301i \u0111\u00e2\u0301t m\u01a1\u0301i co\u0301 th\u00ea\u0309 g\u00e2\u0300n nh\u01b0 m\u0103\u0323t ph\u0103\u0309ng. S\u01b0\u0323 sai s\u00f4\u0301 \u01a1\u0309 \u0111\u00e2y kh\u00f4ng nhi\u00ea\u0300u, kh\u00f4ng a\u0309nh h\u01b0\u01a1\u0309ng t\u01a1\u0301i \u0111a\u0301p a\u0301n chi\u0301nh xa\u0301c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u00f4\u0323t s\u00f4\u0301 tr\u01b0\u01a1\u0300ng h\u01a1\u0323p \u0111\u0103\u0323c bi\u00ea\u0323t nh\u01b0: \u0111\u01b0\u01a1\u0300ng ha\u0300ng kh\u00f4ng, \u0111\u01b0\u01a1\u0300ng bi\u00ea\u0309n,\u2026 ta kh\u00f4ng th\u00ea\u0309 s\u01b0\u0309 du\u0323ng ti\u0301nh ch\u00e2\u0301t cu\u0309a \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng tr\u00ean m\u0103\u0323t ph\u0103\u0309ng b\u01a1\u0309i tra\u0301i \u0111\u00e2\u0301t hi\u0300nh c\u00e2\u0300u, co\u0301 s\u01b0\u0323 thay \u0111\u00f4\u0309i trong khoa\u0309ng ca\u0301ch, \u0111\u01b0\u01a1\u0300ng \u0111i \u0111\u00ea\u0301n. \u0110\u00e2y cu\u0303ng la\u0300 ca\u0301ch ly\u0301 gia\u0309i cho c\u00e2u \u0111\u00f4\u0301: ta\u0323i sao tr\u00ean ba\u0309n \u0111\u00f4\u0300 \u0111\u01b0\u01a1\u0300ng bay la\u0300 m\u00f4\u0323t \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng va\u0300 khoa\u0309ng ca\u0301ch kha\u0301 ng\u0103\u0301n, nh\u01b0ng th\u01b0\u0323c t\u00ea\u0301 chu\u0301ng ta la\u0323i kh\u00f4ng bay theo \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01a1\u0300i k\u00ea\u0301t<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vietlearn hy vo\u0323ng v\u01a1\u0301i ba\u0300i vi\u00ea\u0301t na\u0300y \u0111a\u0303 \u0111em \u0111\u00ea\u0301n cho ba\u0323n \u0111o\u0323c ca\u0301c th\u00f4ng tin h\u01b0\u0303u i\u0301ch, c\u00e2\u0300n thi\u00ea\u0301t. Ghe\u0301 qua blog Vietlearn \u0111\u00ea\u0309 \u0111o\u0301n \u0111o\u0323c ca\u0301c bi\u0301 ki\u0301p ho\u0323c t\u00e2\u0323p m\u01a1\u0301i la\u0323, ca\u0301c ki\u00ea\u0301n th\u01b0\u0301c Toa\u0301n ho\u0323c, V\u00e2\u0323t ly\u0301,\u2026 thu\u0301 vi\u0323 va\u0300 nh\u01b0\u0303ng th\u00f4ng tin m\u01a1\u0301i nh\u00e2\u0301t v\u00ea\u0300 ho\u0323c t\u00e2\u0323p,\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ho\u0323c Toa\u0301n 6 cu\u0300ng Vietlearn: Ki\u00ea\u0301n th\u01b0\u0301c v\u00ea\u0300 n\u01b0\u0309a m\u0103\u0323t ph\u0103\u0309ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u00ea\u0301n th\u01b0\u0301c v\u00ea\u0300 go\u0301c, s\u00f4\u0301 \u0111o go\u0301c, ca\u0301ch ve\u0303 go\u0301c \u2013 Gi\u1ecfi to\u00e1n l\u1edbp 6<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Sau khi ti\u0300m hi\u00ea\u0309u v\u00ea\u0300 \u0111\u01b0\u01a1\u0300ng th\u0103\u0309ng \u0111i qua hai \u0111i\u00ea\u0309m \u01a1\u0309 ba\u0300i tr\u01b0\u01a1\u0301c, chu\u0301ng ta se\u0303 ti\u0300m hi\u00ea\u0309u n\u00f4\u0323i dung ki\u00ea\u0301n th\u01b0\u0301c m\u01a1\u0301i: tia. Tia la\u0300 m\u00f4\u0323t trong ca\u0301c kha\u0301i ni\u00ea\u0323m c\u01a1 ba\u0309n cu\u0309a hi\u0300nh ho\u0323c Toa\u0301n 6. Tia la\u0300 gi\u0300? Th\u00ea\u0301 na\u0300o go\u0323i la\u0300 tia? Th\u00ea\u0301 na\u0300o [&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-2647","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\/2647","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=2647"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2647\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}