B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m H\u00ecnh h\u1ecdc 12 \u2013 Ch\u01b0\u01a1ng 1 - \u0110\u1ec1 ki\u1ec3m tra ch\u01b0\u01a1ng 1 (ph\u1ea7n 3)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-hinh-hoc-12-chuong-1-de-kiem-tra-chuong-1-phan-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m H\u00ecnh h\u1ecdc 12 \u2013 Ch\u01b0\u01a1ng 1 - \u0110\u1ec1 ki\u1ec3m tra ch\u01b0\u01a1ng 1 (ph\u1ea7n 3)\" \/>\n<meta property=\"og:description\" content=\"C\u00e2u 15:\u00a0T\u00ednh th\u1ec3 t\u00edch h\u00ecnh h\u1ed9p ABCD.A’B’C’D’ c\u00f3 \u0111\u00e1y l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt, A\u2019AB l\u00e0 tam gi\u00e1c \u0111\u1ec1u, h\u00ecnh chi\u1ebfu c\u1ee7a A\u2019 l\u00ean (ABCD) tr\u00f9ng v\u1edbi trung \u0111i\u1ec3m c\u1ee7a AC, BC = a, AB = \u221a3a C\u00e2u 16:\u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, h\u00ecnh chi\u1ebfu c\u1ee7a S l\u00ean \u0111\u00e1y tr\u00f9ng […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-hinh-hoc-12-chuong-1-de-kiem-tra-chuong-1-phan-3\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - 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{"id":28785,"date":"2018-04-27T16:20:03","date_gmt":"2018-04-27T09:20:03","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=28785"},"modified":"2018-04-27T16:20:03","modified_gmt":"2018-04-27T09:20:03","slug":"bai-tap-trac-nghiem-hinh-hoc-12-chuong-1-de-kiem-tra-chuong-1-phan-3","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-hinh-hoc-12-chuong-1-de-kiem-tra-chuong-1-phan-3\/","title":{"rendered":"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m H\u00ecnh h\u1ecdc 12 \u2013 Ch\u01b0\u01a1ng 1 – \u0110\u1ec1 ki\u1ec3m tra ch\u01b0\u01a1ng 1 (ph\u1ea7n 3)"},"content":{"rendered":"

C\u00e2u 15:<\/b>\u00a0T\u00ednh th\u1ec3 t\u00edch h\u00ecnh h\u1ed9p ABCD.A’B’C’D’ c\u00f3 \u0111\u00e1y l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt, A\u2019AB l\u00e0 tam gi\u00e1c \u0111\u1ec1u, h\u00ecnh chi\u1ebfu c\u1ee7a A\u2019 l\u00ean (ABCD) tr\u00f9ng v\u1edbi trung \u0111i\u1ec3m c\u1ee7a AC, BC = a, AB = \u221a3a<\/p>\n

$\"\"$ <\/p>\n

C\u00e2u 16:<\/b>\u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, h\u00ecnh chi\u1ebfu c\u1ee7a S l\u00ean \u0111\u00e1y tr\u00f9ng v\u1edbi trung \u0111i\u1ec3m c\u1ee7a AB. T\u00ednh kho\u1ea3ng c\u00e1ch h t\u1eeb A \u0111\u1ebfn m\u1eb7t (SCD), bi\u1ebft r\u1eb1ng th\u1ec3 t\u00edch c\u1ee7a h\u00ecnh ch\u00f3p S.ABCD b\u1eb1ng<\/p>\n

$\"\"$ <\/p>\n

C\u00e2u 17:<\/b>\u00a0T\u00ednh th\u1ec3 t\u00edch V c\u1ee7a kh\u1ed1i l\u0103ng tr\u1ee5 ABC.A’B’C’ c\u00f3 A\u2019BC l\u00e0 tam gi\u00e1c \u0111euf c\u1ea1nh b\u1eb1ng a, ABC l\u00e0 tam gi\u00e1c c\u00e2n t\u1ea1i A, h\u00ecnh chi\u1ebfu c\u1ee7a A\u2019 l\u00ean (ABC) tr\u00f9ng v\u1edbi trung \u0111i\u1ec3m c\u1ee7a BC, g\u00f3c gi\u1eefa A\u2019A v\u00e0 (ABC) b\u1eb1ng 60^{o<\/sup><\/p>\n}

$\"\"$ <\/p>\n

C\u00e2u 18:<\/b>\u00a0T\u00ednh th\u1ec3 t\u00edch V c\u1ee7a kh\u1ed1i ch\u00f3p l\u1ee5c gi\u00e1c \u0111\u1ec1u c\u00f3 \u0111\u00e1y n\u1ed9i ti\u1ebfp \u0111\u01b0\u1eddng tr\u00f2n b\u00e1n k\u00ednh r, m\u1eb7t b\u00ean t\u1ea1o v\u1edbi \u0111\u00e1y m\u1ed9t g\u00f3c b\u1eb1ng 60^{o<\/sup><\/p>\n}

$\"\"$ <\/p>\n

C\u00e2u 19:<\/b>\u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 SA vu\u00f4ng g\u00f3c v\u1edbi \u0111\u00e1y, ABCD l\u00e0 h\u00ecnh thoi c\u1ea1nh b\u1eb1ng 2a, g\u00f3c BAD = 120^{o<\/sup>. Bi\u1ebft th\u1ec3 t\u00edch c\u1ee7a h\u00ecnh ch\u00f3p b\u1eb1ng 2a^{3<\/sup>\u221a3\/3 . H\u00e3y t\u00ednh kho\u1ea3ng c\u00e1ch h t\u1eeb A \u0111\u1ebfn m\u1eb7t (SBD)<\/p>\n}}

$\"\"$ <\/p>\n

C\u00e2u 20:<\/b>\u00a0Cho h\u00ecnh l\u1eadp ph\u01b0\u01a1ng ABCD.A’B’C’D’ c\u00f3 c\u1ea1nh b\u1eb1ng a. M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a AD. T\u00ednh kho\u1ea3ng c\u00e1ch h t\u1eeb M \u0111\u1ebfn m\u1eb7t ph\u1eb3ng (AB\u2019C)<\/p>\n

$\"\"$ <\/p>\n

H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0110\u00e1p \u00e1n<\/b><\/p>\n\n\n\n
15-B<\/td>\n 16-D<\/td>\n 17-A<\/td>\n 18-C<\/td>\n 19-B<\/td>\n 20-A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"
C\u00e2u 15:\u00a0T\u00ednh th\u1ec3 t\u00edch h\u00ecnh h\u1ed9p ABCD.A’B’C’D’ c\u00f3 \u0111\u00e1y l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt, A\u2019AB l\u00e0 tam gi\u00e1c \u0111\u1ec1u, h\u00ecnh chi\u1ebfu c\u1ee7a A\u2019 l\u00ean (ABCD) tr\u00f9ng v\u1edbi trung \u0111i\u1ec3m c\u1ee7a AC, BC = a, AB = \u221a3a C\u00e2u 16:\u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, h\u00ecnh chi\u1ebfu c\u1ee7a S l\u00ean \u0111\u00e1y tr\u00f9ng […]<\/p>\n","protected":false},"author":3,"featured_media":28786,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[157],"tags":[1450,1448],"yoast_head":"\nB\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m H\u00ecnh h\u1ecdc 12 \u2013 Ch\u01b0\u01a1ng 1 - \u0110\u1ec1 ki\u1ec3m tra ch\u01b0\u01a1ng 1 (ph\u1ea7n 3)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-hinh-hoc-12-chuong-1-de-kiem-tra-chuong-1-phan-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m H\u00ecnh h\u1ecdc 12 \u2013 Ch\u01b0\u01a1ng 1 - 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