Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n<\/p>\n<\/div>\n
C\u00e2u 7 (1 \u0111i\u1ec3m)<\/strong><\/p>\n Cho h\u00ecnh ch\u00f3p S.ABC c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c \u0111\u1ec1u c\u1ea1nh a, tam gi\u00e1c SAB c\u00e2n t\u1ea1i S v\u00e0 n\u1eb1m trong m\u1eb7t ph\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi \u0111\u00e1y. Bi\u1ebft g\u00f3c t\u1ea1o b\u1edfi SC v\u1edbi \u0111\u00e1y b\u1eb1ng 60<\/p>\n . T\u00ednh th\u1ec3 t\u00edch c\u1ee7a kh\u1ed1i ch\u00f3p S.ABC v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa SA v\u00e0 BC.<\/p>\n C\u00e2u 8 (1 \u0111i\u1ec3m)<\/strong><\/p>\n Trong m\u1eb7t ph\u1eb3ng t\u1ecda \u0111\u1ed9 Oxy, cho tam gi\u00e1c ABC vu\u00f4ng t\u1ea1i A, BC = 2BA. G\u1ecdi E, F l\u1ea7n l\u01b0\u1ee3t l\u00e0 trung \u0111i\u1ec3m c\u1ee7a BC v\u00e0 AC. Tr\u00ean tia \u0111\u1ed1i c\u1ee7a FE l\u1ea5y \u0111i\u1ec3m M sao cho FM = 3FE. Bi\u1ebft t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m M(5; -1) v\u00e0 ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng AC: 2x + y \u2013 3 = 0, \u0111i\u1ec3m A c\u00f3 ho\u00e0nh \u0111\u1ed9 l\u00e0 s\u1ed1 nguy\u00ean. X\u00e1c \u0111\u1ecbnh t\u1ecda \u0111\u1ed9 c\u00e1c \u0111\u1ec9nh c\u1ee7a tam gi\u00e1c ABC.<\/p>\n <\/p>\n <\/em><\/p>\n T\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT T\u0129nh Gia 3 t\u1ec9nh Thanh H\u00f3a, \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c thi v\u00e0o ng\u00e0y 9\/1\/2016, c\u00e1c em theo d\u00f5i d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n C\u00e2u 7 (1 \u0111i\u1ec3m) Cho h\u00ecnh ch\u00f3p S.ABC c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[28],"tags":[],"yoast_head":"\n