Hai đường thẳng vuông góc.

Home Lớp 11 Toán lớp 11 - Sách kết nối tri thức Bài 22 - Hai đường thẳng vuông gócBài tập cơ bản

{"common":{"save":0,"post_id":"7113","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5511","post_id":"7113","mon_id":"1158924","chapter_id":"1159174","question":"Cho hình l\u1eadp ph\u01b0\u01a1ng ABCD.A'B'C'D'. Góc gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng DA' và CB b\u1eb1ng<\/p>","options":["A.<\/strong> 45°","B.<\/strong> 60°","C.<\/strong> 30°","D.<\/strong> 90°"],"correct":"1","level":"1","hint":"","answer":"<svg height=\"220\" width=\"250\"> <g> <title><\/title> <rect fill=\"#ffffff\" height=\"222\" id=\"canvas_background\" width=\"252\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g> <title><\/title> <g id=\"svg_20\"> <g id=\"svg_11\"> <g id=\"svg_9\"> <path d=\"m22.52001,80.83241l40.2,-53l160.79998,0l-40.2,53l-160.79998,0z\" fill=\"none\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\"><\/path> <path d=\"m22.52001,198.83241l40.2,-53l160.79998,0l-40.2,53l-160.79998,0z\" fill=\"none\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\"><\/path> <line fill=\"none\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"223\" x2=\"222.99999\" y1=\"28.85\" y2=\"145.84999\"><\/line> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"184\" x2=\"183.99999\" y1=\"80.85\" y2=\"197.84999\"><\/line> <line fill=\"none\" id=\"svg_5\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"63\" x2=\"62.99999\" y1=\"28.85\" y2=\"145.84999\"><\/line> <line fill=\"none\" id=\"svg_6\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"22\" x2=\"21.99999\" y1=\"81.85\" y2=\"198.84999\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_7\" stroke=\"#ffffff\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-width=\"2\" x1=\"65\" x2=\"218\" y1=\"145.84999\" y2=\"145.84999\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_8\" stroke=\"#ffffff\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-width=\"2\" x1=\"57.99999\" x2=\"26\" y1=\"151.84999\" y2=\"192.84999\"><\/line> <\/g> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_10\" stroke=\"#000000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-width=\"1.5\" x1=\"62\" x2=\"23\" y1=\"27.85\" y2=\"196.84999\"><\/line> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" font-style=\"normal\" id=\"svg_12\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"47\" xml:space=\"preserve\" y=\"23.85\">A'<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"224.99999\" xml:space=\"preserve\" y=\"22.85\">B'<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"163.99999\" xml:space=\"preserve\" y=\"75.84999\">C'<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_15\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"1\" xml:space=\"preserve\" y=\"81.84999\">D'<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_16\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"4\" xml:space=\"preserve\" y=\"213.84999\">D<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_17\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"66\" xml:space=\"preserve\" y=\"141.84999\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_18\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"227.99999\" xml:space=\"preserve\" y=\"144.84999\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_19\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"186.99999\" xml:space=\"preserve\" y=\"211.84999\">C<\/text> <\/g> <\/g> <\/svg><\/span><\/p>Vì CB \/\/ DA nên (DA', CB) = (DA', DA) = $\\widehat{A^\\prime DA}$<\/span> = 45° (do ADD'A' là hình vuông).<\/p>Ch\u1ecdn A.<\/strong> 45°.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-04-21 02:19:21","option_type":"txt","len":0},{"id":"5516","post_id":"7113","mon_id":"1158924","chapter_id":"1159174","question":"Trong không gian, cho \u0111\u01b0\u1eddng th\u1eb3ng d và \u0111i\u1ec3m O. Qua O có bao nhiêu \u0111\u01b0\u1eddng th\u1eb3ng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng d?<\/p>","options":["A.<\/strong> 3","B.<\/strong> vô s\u1ed1","C.<\/strong> 1","D.<\/strong> 2"],"correct":"2","level":"1","hint":"","answer":"Trong không gian, có vô s\u1ed1<\/strong> <\/span>\u0111\u01b0\u1eddng th\u1eb3ng qua m\u1ed9t \u0111i\u1ec3m cho tr\u01b0\u1edbc và vuông góc v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc.<\/p>Ch\u1ecdn B.<\/strong> vô s\u1ed1.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-04-21 03:24:11","option_type":"txt","len":1},{"id":"5517","post_id":"7113","mon_id":"1158924","chapter_id":"1159174","question":"Trong không gian, cho các m\u1ec7nh \u0111\u1ec1 sau, m\u1ec7nh \u0111\u1ec1 nào là m\u1ec7nh \u0111\u1ec1 \u0111úng?<\/p>","options":["A.<\/strong> M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vuông góc v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng vuông góc thì vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i.","B.<\/strong> Hai \u0111\u01b0\u1eddng th\u1eb3ng cùng song song v\u1edbi m\u1ed9t m\u1eb7t ph\u1eb3ng thì song song v\u1edbi nhau.","C.<\/strong> M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vuông góc v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song thì vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i.","D.<\/strong> Hai \u0111\u01b0\u1eddng th\u1eb3ng cùng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì vuông góc v\u1edbi nhau."],"correct":"3","level":"1","hint":"","answer":"Ch\u1ecdn C.<\/strong> M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vuông góc v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song thì vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-04-21 03:34:29","option_type":"txt","len":3}]}