Ôn tập chương 4 Hình học phẳng- Bài tập dễ số 2

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Ôn tập chương 4: Một số hình phẳng trong thực tiễnBài tập cơ bản

{"common":{"save":0,"post_id":"4618","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6900","post_id":"4618","mon_id":"1158113","chapter_id":"1158129","question":"Cho hình thoi ABCD có AC = 7 dm, BD = 10 dm. Tính di\u1ec7n tích hình thoi.<\/p><svg height=\"130\" width=\"220\"> <g><title><\/title><rect fill=\"#fff\" height=\"132\" id=\"canvas_background\" width=\"222\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_8\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><path d=\"m14.6305,61.76076l99.00001,-50l99.00001,50l-99.00001,50l-99.00001,-50z\" fill=\"#aaff56\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\"><\/path> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"86.9\" xml:space=\"preserve\" y=\"14.85\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_3\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"6.9\" xml:space=\"preserve\" y=\"79.85\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"96.9\" xml:space=\"preserve\" y=\"124.85\">C<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"202.9\" xml:space=\"preserve\" y=\"83.85\">D<\/text> <line fill=\"none\" id=\"svg_6\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"113.9\" x2=\"113.9\" y1=\"10.85\" y2=\"110.85\"><\/line> <line fill=\"none\" id=\"svg_7\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"14.9\" x2=\"211.9\" y1=\"61.85\" y2=\"61.85\"><\/line> <\/g> <\/svg><\/span><\/p>","options":["70 dm$^2$<\/span>","17 dm$^2$<\/span>","35 dm$^2$<\/span>"],"correct":"3","level":"1","hint":"Di\u1ec7n tích hình thoi là S = 1<\/span>2<\/span><\/span> . a . b v\u1edbi a, b là \u0111\u1ed9 dài hai \u0111\u01b0\u1eddng chéo c\u1ee7a hình thoi.<\/p>","answer":"Di\u1ec7n tích hình thoi ABCD có hai \u0111\u01b0\u1eddng chéo AC = 7 dm, BD = 10 dm là:<\/p>S = $\\dfrac{1}{2}$<\/span> . AC . BD = $\\dfrac{1}{2}$<\/span> . 7 . 10 = 35 (dm$^2$<\/span>)<\/p>V\u1eady \u0111áp án \u0111úng là 35 dm$^2$<\/span><\/strong><\/span><\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"132","test":"3","date":"2021-08-30 11:40:00","option_type":"math","len":0},{"id":"6902","post_id":"4618","mon_id":"1158113","chapter_id":"1158129","question":"Cho hình ch\u1eef nh\u1eadt BACD có BA = 7 cm, AC = 5 cm. Nh\u1eadn xét nào sau \u0111ây \u0111úng<\/strong>?<\/p><svg height=\"130\" width=\"190\"> <g><title><\/title><rect fill=\"#fff\" height=\"132\" id=\"canvas_background\" width=\"192\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_6\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><rect fill=\"#56ffaa\" height=\"86\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"144\" x=\"22.9\" y=\"21.85\"><\/rect> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"8.9\" xml:space=\"preserve\" y=\"22.85\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"172.9\" xml:space=\"preserve\" y=\"24.85\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"171.9\" xml:space=\"preserve\" y=\"117.85\">C<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"7.9\" xml:space=\"preserve\" y=\"121.85\">D<\/text> <\/g> <\/svg><\/span><\/p>","options":["BD = 7 cm","CD = 5 cm","CD > BD"],"correct":"3","level":"1","hint":"Hình ch\u1eef nh\u1eadt có các c\u1ea1nh \u0111\u1ed1i b\u1eb1ng nhau.<\/p>Tính các c\u1ea1nh còn l\u1ea1i c\u1ee7a hình ch\u1eef nh\u1eadt và ki\u1ec3m tra các nh\u1eadn xét \u0111úng hay sai.<\/p>","answer":"Hình ch\u1eef nh\u1eadt BACD có các c\u1eb7p c\u1ea1nh \u0111\u1ed1i là BA và CD ;  AC và BD. <\/p>Vì hình ch\u1eef nh\u1eadt có các c\u1ea1nh \u0111\u1ed1i b\u1eb1ng nhau nên CD = BA = 7 cm; BD = AC = 5cm<\/p>Xét các \u0111áp án:<\/p>BD = 7 cm  Sai<\/span> vì BD = 5 cm<\/p>CD = 5 cm  Sai<\/span> vì CD = 7 cm<\/p>CD > BD     \u0110úng<\/span> vì CD = 7 cm > BD = 5 cm<\/p>V\u1eady \u0111áp án là CD > BD<\/strong><\/span><\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"132","test":"3","date":"2021-08-30 11:50:23","option_type":"txt","len":0},{"id":"6904","post_id":"4618","mon_id":"1158113","chapter_id":"1158129","question":"M\u1ed9t m\u1ea3nh \u0111\u1ea5t hình bình hành có kích th\u01b0\u1edbc nh\u01b0 hình. Tính di\u1ec7n tích c\u1ee7a m\u1ea3nh \u0111\u1ea5t \u0111ó.<\/p><svg height=\"130\" width=\"210\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"132\" id=\"canvas_background\" width=\"212\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_1\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><image height=\"105\" id=\"svg_2\" width=\"211\" x=\"-4\" xlink:href=\"data:image\/png;base64,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\" y=\"5\"><\/image> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"41.9\" xml:space=\"preserve\" y=\"57\">15 m<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"63.9\" xml:space=\"preserve\" y=\"121\">30 m<\/text> <\/g> <\/svg><\/span><\/p>","options":["450 m","450 m$^2$<\/span>","225 m$^2$<\/span>"],"correct":"2","level":"1","hint":"Di\u1ec7n tích hình bình hành là S = a . h <\/strong> v\u1edbi a là m\u1ed9t c\u1ea1nh và h là chi\u1ec1u cao t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u1ea1nh \u0111ó.<\/p>","answer":"M\u1ea3nh \u0111\u1ea5t hình bình hành có c\u1ea1nh \u0111áy b\u1eb1ng 30 m, chi\u1ec1u cao t\u01b0\u01a1ng \u1ee9ng là 15 m.<\/p>Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t hình bình hành là:<\/p>S = 30 . 15 = 450 (m$^2$<\/span>)<\/p>V\u1eady \u0111áp án \u0111úng là 450 m$^2$<\/span><\/strong><\/span><\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"132","test":"3","date":"2021-08-30 12:00:03","option_type":"math","len":0}]}