\u0110\u1eb7c \u0111i\u1ec3m chung c\u1ee7a ng\u01b0\u1eddi t\u01b0\u1edbng m\u1eaft tam gi\u00e1c<\/figcaption><\/figure>\nNg\u01b0\u1eddi ta th\u01b0\u1eddng n\u00f3i, b\u1ea1n c\u01b0 x\u1eed nh\u01b0 th\u1ebf n\u00e0o s\u1ebd \u1ee9ng v\u1edbi s\u1ed1 ph\u1eadn nh\u01b0 th\u1ebf \u0111\u00f3. V\u00ec v\u1eady, h\u00e3y hi\u1ec3u t\u00ednh c\u00e1ch c\u1ee7a ng\u01b0\u1eddi c\u00f3 \u0111\u00f4i m\u1eaft tam gi\u00e1c \u0111\u1ec3 c\u00f3 c\u00e1i nh\u00ecn s\u01a1 qua v\u1ec1 v\u1eadn m\u1ec7nh t\u01b0\u01a1ng lai c\u1ee7a ng\u01b0\u1eddi n\u00e0y.<\/span><\/p>\n<\/span>\u01afu \u0111i\u1ec3m<\/strong><\/span><\/h3>\nNg\u01b0\u1eddi c\u00f3 \u0111\u00f4i m\u1eaft h\u00ecnh tam gi\u00e1c c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m sau:<\/span><\/p>\n<\/span>S\u1ef1 nh\u1ea1y b\u00e9n v\u00e0 th\u00f4ng minh h\u01a1n ng\u01b0\u1eddi<\/strong><\/em><\/span><\/h4>\nNg\u01b0\u1eddi c\u00f3 m\u1eaft h\u00ecnh tam gi\u00e1c l\u00e0 ki\u1ec3u ng\u01b0\u1eddi c\u00f3 s\u1ef1 nh\u1ea1y b\u00e9n v\u00e0 th\u00f4ng minh h\u01a1n ng\u01b0\u1eddi. Ngay c\u1ea3 trong nh\u1eefng t\u00ecnh hu\u1ed1ng kh\u00f4ng l\u01b0\u1eddng tr\u01b0\u1edbc \u0111\u01b0\u1ee3c, h\u1ecd lu\u00f4n c\u00f3 th\u1ec3 t\u00ecm ra gi\u1ea3i ph\u00e1p nhanh ch\u00f3ng cho v\u1ea5n \u0111\u1ec1.<\/span><\/p>\n<\/span>C\u1ea9n th\u1eadn v\u00e0 b\u00ecnh t\u0129nh<\/strong><\/em><\/span><\/h4>\n
\u01afu \u0111i\u1ec3m v\u1ec1 t\u00ednh c\u00e1ch c\u1ea9n th\u1eadn v\u00e0 b\u00ecnh t\u0129nh<\/figcaption><\/figure>\nH\u1ecd l\u00e0 ng\u01b0\u1eddi ch\u00fa t\u00e2m v\u00e0o c\u00f4ng vi\u1ec7c v\u00e0 c\u0169ng bi\u1ebft r\u1eb1ng s\u1ef1 ch\u1ee7 quan, c\u1ea9u th\u1ea3 c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u thi\u1ec7t h\u1ea1i. C\u1ea3 nam v\u00e0 n\u1eef khi s\u1edf h\u1eefu d\u00e1ng m\u1eaft tam gi\u00e1c \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng gi\u1ea3i quy\u1ebft m\u1ecdi t\u00ecnh hu\u1ed1ng m\u1ed9t c\u00e1ch tr\u01a1n tru b\u1eb1ng logic v\u00e0 tr\u00ed th\u00f4ng minh c\u1ee7a m\u00ecnh. <\/span><\/p>\nV\u00ec h\u1ecd lu\u00f4n gi\u1eef \u0111\u01b0\u1ee3c b\u00ecnh t\u0129nh trong m\u1ecdi t\u00ecnh hu\u1ed1ng v\u00e0 nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c kh\u00f3 kh\u0103n. <\/span>T\u1eeb \u0111\u00f3, gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 m\u1ed9t c\u00e1ch nghi\u00eam t\u00fac theo c\u00e1ch \u0111\u00fang \u0111\u1eafn nh\u1ea5t c\u00f3 th\u1ec3. H\u01a1n h\u1ebft, h\u1ecd kh\u00f4ng ch\u1ee7 quan v\u00e0 b\u1ea5t c\u1ea9n khi l\u00e0m nh\u1eefng vi\u1ec7c nh\u1ecf, b\u1edfi nh\u1eefng sai s\u00f3t \u0111\u1ebfn t\u1eeb chi ti\u1ebft c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1eadu qu\u1ea3 r\u1ea5t l\u1edbn.<\/span><\/p>\n<\/span>K\u1ef9 n\u0103ng quan s\u00e1t v\u00e0 n\u1eafm b\u1eaft v\u1ea5n \u0111\u1ec1 t\u1ed1t<\/strong><\/em><\/span><\/h4>\n
K\u1ef9 n\u0103ng quan s\u00e1t v\u00e0 n\u1eafm b\u1eaft v\u1ea5n \u0111\u1ec1 t\u1ed1t<\/figcaption><\/figure>\nNgo\u00e0i vi\u1ec7c lu\u00f4n gi\u1eef \u0111\u01b0\u1ee3c b\u00ecnh t\u0129nh trong m\u1ecdi vi\u1ec7c, ng\u01b0\u1eddi c\u00f3 m\u1eaft h\u00ecnh tam gi\u00e1c c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng quan s\u00e1t v\u00e0 n\u1eafm b\u1eaft v\u1ea5n \u0111\u1ec1 m\u1ed9t c\u00e1ch tuy\u1ec7t v\u1eddi. T\u1eeb \u0111\u00f3, x\u00e2y d\u1ef1ng c\u00e1c k\u1ebf ho\u1ea1ch chi ti\u1ebft, c\u1ee5 th\u1ec3 \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u1ea9n th\u1eadn t\u1eebng v\u1ea5n \u0111\u1ec1 cho \u0111\u1ebfn khi m\u1ecdi vi\u1ec7c \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp \u1ed5n th\u1ecfa.<\/span><\/p>\n>>> Xem th\u00eam:\u00a0N\u1ed1t Ru\u1ed3i \u1ede Ng\u00f3n Tay Nam V\u00e0 N\u1eef Theo T\u1eebng V\u1ecb Tr\u00ed C\u00f3 \u00dd Ngh\u0129a G\u00ec?<\/em><\/strong><\/p>\n<\/span>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong><\/span><\/h3>\n<\/span>Hi\u1ebfu th\u1eafng, b\u1ea3o th\u1ee7 v\u00e0 t\u1ef1 cao<\/strong><\/em><\/span><\/h4>\n
Hi\u1ebfu th\u1eafng, b\u1ea3o th\u1ee7 v\u00e0 t\u1ef1 cao<\/figcaption><\/figure>\nM\u1ed9t trong nh\u1eefng \u0111i\u1ec3m y\u1ebfu l\u1edbn nh\u1ea5t v\u1ec1 t\u00ednh c\u00e1ch c\u1ee7a ng\u01b0\u1eddi c\u00f3 m\u1eaft h\u00ecnh tam gi\u00e1c l\u00e0 h\u1ecd hi\u1ebfu th\u1eafng v\u00e0 th\u00edch ki\u1ec3m so\u00e1t m\u1ecdi th\u1ee9. H\u1ecd lu\u00f4n \u0111\u00e1nh gi\u00e1 qu\u00e1 cao b\u1ea3n th\u00e2n v\u00e0 kh\u00f4ng bi\u1ebft l\u01b0\u1ee3ng s\u1ee9c m\u00ecnh. <\/span><\/p>\n\u0110\u00e2y c\u0169ng l\u00e0 bi\u1ec3u hi\u1ec7n c\u1ee7a m\u1ed9t ng\u01b0\u1eddi t\u01b0\u01a1ng \u0111\u1ed1i b\u1ea3o th\u1ee7, m\u1ed7i khi c\u00f3 \u00fd ki\u1ebfn tr\u00e1i chi\u1ec1u \u200b\u200br\u1ea5t d\u1ec5 n\u1ea3y sinh m\u00e2u thu\u1eabn v\u1edbi nh\u1eefng ng\u01b0\u1eddi xung quanh. T\u00ednh b\u1ea3o th\u1ee7 c\u0169ng khi\u1ebfn h\u1ecd tr\u1edf n\u00ean c\u1ee9ng \u0111\u1ea7u, kh\u00f4ng bi\u1ebft l\u1eafng nghe \u00fd ki\u1ebfn v\u00e0 \u0111\u00f3ng g\u00f3p c\u1ee7a ng\u01b0\u1eddi xung quanh.<\/span><\/p>\n<\/span>Th\u1ef1c d\u1ee5ng<\/strong><\/em><\/span><\/h4>\nNh\u1eefng ng\u01b0\u1eddi c\u00f3 h\u00ecnh d\u1ea1ng m\u1eaft n\u00e0y r\u1ea5t xem tr\u1ecdng ti\u1ec1n b\u1ea1c. N\u00f3i c\u00e1ch kh\u00e1c, nhi\u1ec1u ng\u01b0\u1eddi \u0111\u00e1nh gi\u00e1 ng\u01b0\u1eddi m\u1eaft tam gi\u00e1c l\u00e0 ng\u01b0\u1eddi r\u1ea5t th\u1ef1c d\u1ee5ng v\u00e0 ti\u1ec1n \u0111\u01b0\u1ee3c v\u00ed nh\u01b0 l\u00e0 m\u1ee5c ti\u00eau cu\u1ed1i c\u00f9ng c\u1ee7a h\u1ecd trong cu\u1ed9c s\u1ed1ng.<\/span> \u0110\u1ed1i v\u1edbi h\u1ecd, ti\u1ec1n l\u00e0 m\u1ee5c \u0111\u00edch s\u1ed1ng v\u00e0 h\u1ecd s\u1ebd l\u00e0m b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec \u0111\u1ec3 th\u1ecfa m\u00e3n \u0111am m\u00ea c\u1ee7a m\u00ecnh.<\/span><\/p>\n
T\u00ednh c\u00e1ch c\u00f3 ph\u1ea7n th\u1ef1c d\u1ee5ng\u00a0<\/span><\/figcaption><\/figure>\nQuan \u0111i\u1ec3m khi \u0111i l\u00e0m ch\u1ec9 c\u00f3 2 \u0111i\u1ec1u quan tr\u1ecdng: l\u00e0m vi\u1ec7c ch\u0103m ch\u1ec9 v\u00e0 y\u00eau ti\u1ec1n. Mong mu\u1ed1n tr\u1edf n\u00ean gi\u00e0u c\u00f3 v\u00e0 \u0111\u1ed9c l\u1eadp v\u1ec1 t\u00e0i ch\u00ednh c\u1ee7a nh\u1eefng ng\u01b0\u1eddi n\u00e0y c\u0169ng cao h\u01a1n so v\u1edbi nh\u1eefng c\u00e1 nh\u00e2n kh\u00e1c. V\u1edbi t\u1ea5t c\u1ea3 ti\u1ec1n b\u1ea1c v\u00e0 danh v\u1ecdng m\u00e0 h\u1ecd mu\u1ed1n c\u00f3, h\u1ecd s\u1ebd c\u00f3 c\u00e1ch bi\u1ebfn n\u00f3 th\u00e0nh hi\u1ec7n th\u1ef1c.<\/span><\/p>\n<\/span>\u00cdch k\u1ef7 v\u00e0 ki\u1ec3m so\u00e1t<\/strong><\/em><\/span><\/h4>\nV\u00ec kh\u00f4ng \u0111\u1eb7t m\u00ecnh v\u00e0o v\u1ecb tr\u00ed c\u1ee7a nh\u1eefng ng\u01b0\u1eddi xung quanh d\u1eabn \u0111\u1ebfn t\u00ednh c\u00e1ch \u00edch k\u1ec9 l\u00e0 \u0111i\u1ec1u d\u1ec5 hi\u1ec3u. T\u1eeb \u0111\u00f3, n\u1ea3y sinh mong mu\u1ed1n ki\u1ec3m so\u00e1t, c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t nh\u1ea5t c\u1eed nh\u1ea5t \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi kh\u00e1c.<\/span><\/p>\n
\u00cdch k\u1ec9 v\u00e0 ki\u1ec3m so\u00e1t<\/figcaption><\/figure>\n\u0110i\u1ec1u n\u00e0y khi\u1ebfn tam gi\u00e1c \u00edt \u0111\u01b0\u1ee3c c\u00e1c m\u1ed1i quan h\u1ec7 trong c\u1ed9ng \u0111\u1ed3ng coi tr\u1ecdng v\u00e0 y\u00eau m\u1ebfn. Nh\u01b0ng ch\u00ednh nh\u1edd t\u00ednh c\u00e1ch n\u00e0y m\u00e0 h\u1ecd bi\u1ebft r\u00f5 m\u00ecnh mu\u1ed1n \u0111i v\u1ec1 h\u01b0\u1edbng n\u00e0o v\u00e0 lu\u00f4n gi\u1eef th\u1ebf ch\u1ee7 \u0111\u1ed9ng trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p kh\u00e1c nhau.<\/span><\/p>\n<\/span>Gian manh, m\u01b0u m\u00f4 v\u00e0 x\u1ea3o tr\u00e1<\/strong><\/em><\/span><\/h4>\nNg\u01b0\u1eddi c\u00f3 m\u1eaft tam gi\u00e1c th\u01b0\u1eddng r\u1ea5t hung d\u1eef v\u00e0 ki\u00eau ng\u1ea1o n\u00ean h\u1ecd kh\u00f4ng ph\u1ea3i tu\u00fdp ng\u01b0\u1eddi d\u1ec5 b\u1ecb thuy\u1ebft ph\u1ee5c. H\u1ecd s\u1ebd l\u00e0m m\u1ecdi th\u1ee9 c\u00f3 th\u1ec3, k\u1ec3 c\u1ea3 nh\u1eefng toan t\u00ednh x\u1ea5u xa v\u00ec l\u1ee3i \u00edch c\u1ee7a h\u1ecd. Do \u0111\u00f3, h\u1ecd kh\u00f4ng c\u00f3 nhi\u1ec1u b\u1ea1n b\u00e8 v\u00e0 n\u1ebfu c\u00f3 th\u00ec c\u0169ng ch\u1ec9 v\u00ec l\u1ee3i \u00edch m\u00e0 th\u00f4i.<\/span><\/p>\n
Gian manh, m\u01b0u m\u00f4 v\u00e0 x\u1ea3o tr\u00e1<\/figcaption><\/figure>\n\u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 ng\u01b0\u1eddi ngoan ngo\u00e3n d\u1ec5 d\u00e0ng nh\u01b0\u1ee3ng b\u1ed9 hay ch\u1ecbu khu\u1ea5t ph\u1ee5c tr\u01b0\u1edbc m\u1ed9t ai \u0111\u00f3. B\u1edfi v\u00ec, h\u1ecd lu\u00f4n bi\u1ebft d\u00f9ng c\u00e1i \u0111\u1ea7u c\u1ee7a m\u00ecnh \u0111\u1ec3 t\u00ednh to\u00e1n thi\u1ec7t h\u01a1n.<\/span><\/p>\nNgo\u00e0i mong mu\u1ed1n \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau c\u00e1 nh\u00e2n, nh\u1eefng ng\u01b0\u1eddi c\u00f3 m\u1eaft h\u00ecnh tam gi\u00e1c lu\u00f4n c\u00f3 cho m\u00ecnh nh\u1eefng m\u00e1nh kh\u00f3e v\u00e0 m\u01b0u m\u00f4 \u0111\u1ec3 nhanh ch\u00f3ng \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u1ee9 m\u00e0 ng\u01b0\u1eddi kh\u00e1c kh\u00f4ng c\u00f3.<\/span><\/p>\n<\/span>D\u1ec5 bu\u1ed3n phi\u1ec1n<\/strong><\/em><\/span><\/h4>\n
D\u1ec5 bu\u1ed3n phi\u1ec1n<\/figcaption><\/figure>\nNh\u1eefng ng\u01b0\u1eddi c\u00f3 m\u1eaft h\u00ecnh tam gi\u00e1c th\u01b0\u1eddng c\u00f3 \u00edt b\u1ea1n b\u00e8, b\u1ea3o v\u1ec7 con c\u00e1i qu\u00e1 m\u1ee9c v\u00e0 d\u1ec5 b\u1ecb \u0111\u1ed1i x\u1eed t\u1ec7 v\u00e0 b\u1ecf b\u00ea trong cu\u1ed9c s\u1ed1ng sau n\u00e0y. \u0110\u1ea7u \u00f3c h\u1ecd l\u00fac n\u00e0o c\u0169ng \u0111\u1ea7y t\u00ednh to\u00e1n n\u00ean d\u1ec5 r\u01a1i v\u00e0o tr\u1ea1ng th\u00e1i bu\u1ed3n b\u00e3 v\u00e0 phi\u1ec1n l\u00f2ng.<\/span><\/p>\n<\/span>B\u1ea5t h\u00f2a v\u1edbi con c\u00e1i<\/strong><\/em><\/span><\/h4>\nCha m\u1eb9 m\u1eaft tam gi\u00e1c th\u01b0\u1eddng l\u00e0 m\u1eabu ng\u01b0\u1eddi th\u00edch k\u1ef7 lu\u1eadt, h\u1ecd lu\u00f4n d\u1ea1y con c\u00e1i ph\u1ea3i tu\u00e2n theo nh\u1eefng quy t\u1eafc do m\u00ecnh \u0111\u1eb7t ra, n\u1ebfu kh\u00f4ng c\u01b0 x\u1eed t\u1ed1t s\u1ebd b\u1ecb tr\u1eebng ph\u1ea1t, khi\u1ec3n tr\u00e1ch. Ph\u01b0\u01a1ng ph\u00e1p nu\u00f4i d\u1ea1y con n\u00e0y th\u01b0\u1eddng ph\u1ea3n t\u00e1c d\u1ee5ng, khi\u1ebfn tr\u1ebb tr\u1edf n\u00ean xa l\u00e1nh, kh\u00f4ng g\u1ea7n g\u0169i cha m\u1eb9, th\u1eadm ch\u00ed ng\u1ed7 ngh\u1ecbch. Khi v\u1ec1 gi\u00e0, h\u1ecd d\u1ec5 b\u1ecb con c\u00e1i b\u1ea1c \u0111\u00e3i, b\u1ecf m\u1eb7c.<\/span><\/p>\n<\/span>T\u1eed vi v\u1eadn m\u1ec7nh c\u1ee7a nam v\u00e0 n\u1eef s\u1edf h\u1eefu m\u1eaft tam gi\u00e1c<\/strong><\/span><\/h2>\n
T\u1eed vi v\u1eadn m\u1ec7nh c\u1ee7a nam v\u00e0 n\u1eef s\u1edf h\u1eefu m\u1eaft tam gi\u00e1c<\/figcaption><\/figure>\nM\u1eaft tam gi\u00e1c \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 kh\u00f4ng t\u1ed1t v\u1ec1 m\u1eb7t nh\u00e2n t\u01b0\u1edbng h\u1ecdc, cu\u1ed9c s\u1ed1ng l\u1eadn \u0111\u1eadn, b\u1ecb m\u1ecdi ng\u01b0\u1eddi gh\u00e9t b\u1ecf, con \u0111\u01b0\u1eddng c\u00f4ng danh l\u1eabn t\u00ecnh c\u1ea3m kh\u00f4ng d\u1ec5 d\u00e0ng. \u0110\u1ec3 thay \u0111\u1ed5i v\u1eadn m\u1ec7nh c\u1ee7a m\u00ecnh, ng\u01b0\u1eddi s\u1edf h\u1eefu t\u01b0\u1edbng m\u1eaft n\u00e0y ph\u1ea3i nh\u1eadn ra nh\u1eefng \u0111i\u1ec3m y\u1ebfu m\u00e0 m\u00ecnh g\u1eb7p ph\u1ea3i, t\u1eeb \u0111\u00f3 s\u1eeda ch\u1eefa v\u00e0 t\u00ecm c\u00e1ch kh\u1eafc ph\u1ee5c.<\/span><\/p>\n<\/span>Nam m\u1eaft tam gi\u00e1c<\/strong><\/span><\/h3>\nD\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m trong v\u1eadn m\u1ec7nh t\u01b0\u1edbng m\u1eaft \u0111\u00e0n \u00f4ng c\u00f3 h\u00ecnh tam gi\u00e1c:<\/span><\/p>\n