Trung điểm của đoạn thẳng - Bài tập trung bình

Home Toán lớp 6 Tập 2 Những hình hình học cơ bản Bài 35: Trung điểm của đoạn thẳngBài tập trung bình

{"common":{"save":0,"post_id":"4667","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7262","post_id":"4667","mon_id":"1158113","chapter_id":"1158164","question":"Tính \u0111\u1ed9 dài \u0111o\u1ea1n th\u1eb3ng AC, bi\u1ebft B là trung \u0111i\u1ec3m c\u1ee7a AC và AB = 3,5 cm.<\/p><svg height=\"60\" width=\"300\"> <g><title><\/title><rect fill=\"#fff\" height=\"62\" id=\"canvas_background\" width=\"302\" 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><line fill=\"none\" id=\"svg_1\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"16.9\" x2=\"277\" y1=\"14.85\" y2=\"14.85\"><\/line> <ellipse cx=\"149.4\" cy=\"15.35\" fill=\"#ff0000\" id=\"svg_2\" rx=\"2\" ry=\"2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"18.4\" cy=\"15.35\" fill=\"#ff0000\" id=\"svg_3\" rx=\"2\" ry=\"2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"275.4\" cy=\"15.35\" fill=\"#ff0000\" id=\"svg_4\" rx=\"2\" ry=\"2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/ellipse> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"10.9\" xml:space=\"preserve\" y=\"45.85\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"267.9\" xml:space=\"preserve\" y=\"42.85\">C<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"142.9\" xml:space=\"preserve\" y=\"44.85\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"66.9\" xml:space=\"preserve\" y=\"33.85\">3,5 cm<\/text> <\/g> <\/svg><\/span><\/p>","options":["AC = 7 cm","AC = 8 cm","AC = 3,5 cm"],"correct":"1","level":"2","hint":"AC = 2 . AB<\/p>","answer":"Vì B là trung \u0111i\u1ec3m c\u1ee7a AC nên AB = BC = $\\dfrac{AC}{2}$<\/span><\/p>Suy ra     AC = 2 . AB<\/p>Thay s\u1ed1: AC = 2 . 3,5 = 7 cm<\/p>V\u1eady \u0111áp án \u0111úng là AC = 7 cm<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2021-09-05 14:54:14","option_type":"txt","len":1},{"id":"7265","post_id":"4667","mon_id":"1158113","chapter_id":"1158164","question":"Tính \u0111\u1ed9 dài \u0111o\u1ea1n th\u1eb3ng MN, bi\u1ebft I là trung \u0111i\u1ec3m c\u1ee7a MN và IN = 3,2 cm.<\/p><svg height=\"70\" width=\"370\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"72\" id=\"canvas_background\" width=\"372\" 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><image height=\"33\" id=\"svg_1\" width=\"362\" x=\"0\" xlink:href=\"data:image\/png;base64,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\" y=\"2.5\"><\/image> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"8.9\" xml:space=\"preserve\" y=\"50\">N<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"180.9\" xml:space=\"preserve\" y=\"53\">I<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"341.9\" xml:space=\"preserve\" y=\"49\">M<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"89.9\" xml:space=\"preserve\" y=\"44\">3,2 cm<\/text> <\/g> <\/svg><\/span><\/p>","options":["MN = 6,3 cm","MN = 6,4 cm","MN = 3,2 cm"],"correct":"2","level":"2","hint":"MN = 2 . IN<\/p>","answer":"Vì I là trung \u0111i\u1ec3m c\u1ee7a MN nên MI = IN = $\\dfrac{MN}{2}$<\/span><\/p>Suy ra     MN = 2 . IN<\/p>Thay s\u1ed1: MN = 2 . 3,2<\/p>               MN = 6,4 (cm)<\/p>V\u1eady \u0111áp án \u0111úng là MN = 6,4 cm<\/strong><\/span><\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"131","test":"3","date":"2021-09-06 02:19:55","option_type":"txt","len":0},{"id":"7267","post_id":"4667","mon_id":"1158113","chapter_id":"1158164","question":"Tính \u0111\u1ed9 dài \u0111o\u1ea1n th\u1eb3ng BC, bi\u1ebft C là trung \u0111i\u1ec3m BD và BD = 9 cm.<\/p><svg height=\"70\" width=\"380\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"72\" id=\"canvas_background\" width=\"382\" 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><image height=\"33\" id=\"svg_1\" width=\"362\" x=\"2\" xlink:href=\"data:image\/png;base64,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\" y=\"3.5\"><\/image> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"12.9\" xml:space=\"preserve\" y=\"50\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"355.9\" xml:space=\"preserve\" y=\"50\">D<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"181.9\" xml:space=\"preserve\" y=\"54\">C<\/text> <\/g> <\/svg><\/span><\/p>","options":["BC = 4,5cm","BC = 5cm","BC = 18cm"],"correct":"1","level":"2","hint":"BC = $\\dfrac{BD}{2}$<\/span><\/p>","answer":"Vì C là trung \u0111i\u1ec3m BD nên BC = CD = $\\dfrac{BD}{2}$<\/span> = $\\dfrac{9}{2}$<\/span> = 4,5 cm<\/p>V\u1eady BC = 4,5 cm<\/strong><\/span><\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"131","test":"3","date":"2021-09-06 02:24:30","option_type":"txt","len":0}]}