Ph\u01b0\u01a1ng ph\u00e1p<\/strong> soi c\u1ea7u l\u00f4 tam gi\u00e1c l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n, \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi c\u00f3 kinh nghi\u1ec7m ch\u01a1i s\u1ed1. L\u00ed do ph\u01b0\u01a1ng ph\u00e1p n\u00e0y tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn, v\u00ec c\u00e1ch \u00e1p d\u1ee5ng d\u1ec5 d\u00e0ng, quy lu\u1eadt d\u1ec5 th\u1ea5y. Ch\u1ec9 c\u1ea7n v\u00e0i thao t\u00e1c \u0111\u00e3 c\u00f3 th\u1ec3 t\u00ecm ra con b\u1ea1ch th\u1ee7 ho\u1eb7c c\u1eb7p song th\u1ee7 l\u00f4 c\u1ea7n ch\u01a1i, v\u1edbi x\u00e1c su\u1ea5t chi\u1ebfn th\u1eafng kh\u00e1 cao.<\/em><\/p>\n Ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u l\u00f4 tam gi\u00e1c ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o kh\u1ea3 n\u0103ng quan s\u00e1t v\u00e0 ghi nh\u1edb c\u1ee7a ng\u01b0\u1eddi ch\u01a1i. D\u1eef li\u1ec7u c\u1ea7n cho c\u00e1ch b\u1eaft l\u00f4 n\u00e0y l\u00e0 d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 c\u1ee7a ng\u00e0y h\u00f4m tr\u01b0\u1edbc, b\u1eb1ng c\u00e1ch quan s\u00e1t, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n gh\u00e9p c\u00e1c con s\u1ed1 tr\u00ean b\u1ea3ng v\u1edbi nhau, t\u1ea1o th\u00e0nh m\u1ed9t chi\u1ebfc khung tam gi\u00e1c bao g\u1ed3m nh\u1eefng con l\u00f4 v\u1edbi t\u1ef7 l\u1ec7 n\u1ed5 cao nh\u1ea5t.<\/p>\n Th\u00f4ng qua kh\u1ea3o s\u00e1t tr\u00ean c\u00e1c di\u1ec5n \u0111\u00e0n s\u1ed1, ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u l\u00f4 tam gi\u00e1c t\u1ecf ra kh\u00e1 hi\u1ec7u qu\u1ea3, mang l\u1ea1i nhi\u1ec1u chi\u1ebfn th\u1eafng cho ng\u01b0\u1eddi ch\u01a1i. V\u00ec v\u1eady, h\u00e3y c\u0169ng quan s\u00e1t v\u00e0 ghi nh\u1edb nh\u1eefng chia s\u1ebb d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n D\u1ef1a v\u00e0o x\u00e1c su\u1ea5t chi\u1ebfn th\u1eafng r\u1ea5t cao c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u l\u00f4 tam gi\u00e1c, nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i \u0111\u00e3 truy\u1ec1n tai nhau v\u1ec1 c\u00e1ch \u00e1p d\u1ee5ng v\u00e0 t\u00ecm ra khung tam gi\u00e1c ma thu\u1eadt n\u00e0y.<\/p>\n D\u01b0\u1edbi \u0111\u00e2y l\u00e0 2 c\u00e1ch b\u1eaft khung tam gi\u00e1c m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i \u00e1p d\u1ee5ng nh\u1ea5t.<\/p>\n Ph\u01b0\u01a1ng ph\u00e1p b\u1eaft khung tam gi\u00e1c d\u1ef1a v\u00e0o \u0111\u1ec1 \u0111\u01b0\u1ee3c xem l\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t. Th\u1ee9 t\u1ef1 c\u00e1c b\u01b0\u1edbc \u0111\u1ec3 t\u00ecm ra \u0111\u00e1p \u00e1n nh\u01b0 sau:<\/p>\n1\/ T\u00ecm hi\u1ec3u ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u l\u00f4 tam gi\u00e1c:<\/span><\/h2>\n
2\/ C\u00e1ch soi c\u1ea7u l\u00f4 tam gi\u00e1c:<\/span><\/h2>\n
2.1 C\u00e1ch b\u1eaft khung tam gi\u00e1c d\u1ef1a v\u00e0o \u0111\u1ec1 <\/span><\/h3>\n
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