Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n<\/p>\n<\/div>\n
C\u00e2u 5 (1 \u0111i\u1ec3m).<\/strong>Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxyz, cho h\u00ecnh vu\u00f4ng ABCD c\u00f3 \u0111i\u1ec3m A(4;-1;5) v\u00e0 \u0111i\u1ec3m B(-2;7;5). T\u00ecm t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m C, D bi\u1ebft t\u00e2m h\u00ecnh vu\u00f4ng thu\u1ed9c mp(Oxy).<\/p>\n C\u00e2u 6 (1 \u0111i\u1ec3m).<\/strong>Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, h\u00ecnh chi\u1ebfu c\u1ee7a S l\u00ean m\u1eb7t ph\u1eb3ng (ABCD) l\u00e0 trung \u0111i\u1ec3m c\u1ee7a AD, g\u00f3c gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng SB v\u00e0 m\u1eb7t \u0111\u00e1y b\u1eb1ng 60 \u0111\u1ed9. G\u1ecdi M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a DC. T\u00ednh th\u1ec3 t\u00edch kh\u1ed1i ch\u00f3p S.ABM v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng SA v\u00e0 BM.<\/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\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n – THPT chuy\u00ean Nguy\u1ec5n Hu\u1ec7 n\u0103m 2016, H\u00e0 N\u1ed9i, 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).Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxyz, cho h\u00ecnh vu\u00f4ng ABCD c\u00f3 \u0111i\u1ec3m A(4;-1;5) v\u00e0 \u0111i\u1ec3m B(-2;7;5). T\u00ecm […]<\/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