Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n<\/p>\n<\/div>\n
C\u00e2u 5<\/strong> (1 \u0111i\u1ec3m).<\/em> <\/strong>Cho h\u00ecnh ch\u00f3p S.ABCD<\/em> c\u00f3 \u0111\u00e1y ABCD<\/em> l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a<\/em>. G\u1ecdi I<\/em> l\u00e0 trung \u0111i\u1ec3m AB<\/em>, H<\/em> l\u00e0 giao \u0111i\u1ec3m c\u1ee7a BD<\/em> v\u1edbi IC<\/em>. C\u00e1c m\u1eb7t ph\u1eb3ng (SBD<\/em>) v\u00e0 (SIC<\/em>) c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi \u0111\u00e1y. G\u00f3c gi\u1eefa (SAB<\/em>) v\u00e0 (ABCD<\/em>) b\u1eb1ng 60 \u0111\u1ed9. T\u00ednh th\u1ec3 t\u00edch kh\u1ed1i ch\u00f3p S.ABCD<\/em> v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng SA<\/em> v\u00e0 IC<\/em>.<\/p>\n C\u00e2u 7<\/strong> (1 \u0111i\u1ec3m).<\/em><\/strong> Cho h\u00ecnh l\u0103ng tr\u1ee5 tam gi\u00e1c \u0111\u1ec1u ABC.A\u2019B\u2019C\u2019<\/em> c\u00f3 t\u1ea5t c\u00e0 c\u00e1c c\u1ea1nh \u0111\u1ec1u b\u1eb1ng a<\/em>. T\u00ednh th\u1ec3 t\u00edch c\u1ee7a h\u00ecnh l\u0103ng tr\u1ee5 v\u00e0 di\u1ec7n t\u00edch c\u1ee7a m\u1eb7t c\u1ea7u ngo\u1ea1i ti\u1ebfp h\u00ecnh l\u0103ng tr\u1ee5 theo a<\/em>.<\/strong><\/p>\n <\/p>\n <\/p>\n<\/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\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n – THPT Lam Kinh, \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c thi l\u1ea7n 1 n\u0103m 2016, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n C\u00e2u 5 (1 \u0111i\u1ec3m). Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a. G\u1ecdi I l\u00e0 trung \u0111i\u1ec3m AB, H l\u00e0 giao \u0111i\u1ec3m c\u1ee7a BD v\u1edbi IC. C\u00e1c m\u1eb7t […]<\/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\u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Lam Kinh<\/h2>\n