Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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HomeLớp 6Toán lớp 6 - Sách kết nối tri thứcBài 18: Hình tam giác đều, hình vuông, hình lục giác đềuBài tập nâng cao
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\" y=\"4\"><\/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=\"110.9\" xml:space=\"preserve\" y=\"125.85\">O<\/text> <\/g> <\/svg><\/span><\/p>","options":["OAB là tam giác \u0111\u1ec1u","MON là tam giác \u0111\u1ec1u","DMO là tam giác \u0111\u1ec1u","T\u1ea5t c\u1ea3 các \u0111áp án \u0111\u1ec1u \u0111úng"],"correct":"4","level":"3","hint":"","answer":"<p>Có 6 tam giác \u0111\u1ec1u trong hình v\u1ebd là OAB, OBC, OCD, ODM, OMN, ONA<\/p><p>OAB là tam giác \u0111\u1ec1u <span style=\"color:#16a085;\">\u0110úng<\/span><\/p><p>MON là tam giác \u0111\u1ec1u <span style=\"color:#16a085;\">\u0110úng<\/span><\/p><p>DMO là tam giác \u0111\u1ec1u <span style=\"color:#16a085;\">\u0110úng<\/span><\/p><p>V\u1eady \u0111áp án \u0111úng là<span style=\"color:#16a085;\"><strong> T\u1ea5t c\u1ea3 các \u0111áp án \u0111\u1ec1u \u0111úng<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"1","date":"2021-10-10 13:10:15","option_type":"txt","len":3},{"id":"9106","post_id":"4916","mon_id":"1158113","chapter_id":"1158129","question":"<p>Cho tam giác \u0111\u1ec1u PNM có c\u1ea1nh b\u1eb1ng 40 cm. Câu nào sau \u0111ây <strong>sai<\/strong>?<\/p><p> <span class=\"svgedit\"><svg height=\"140\" width=\"170\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"142\" id=\"canvas_background\" width=\"172\" 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=\"128\" id=\"svg_1\" stroke=\"null\" width=\"163.99999\" x=\"3\" xlink:href=\"data:image\/png;base64,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\" y=\"5\"><\/image> <\/g> <\/svg><\/span><\/p>","options":["PM = MN = NP = 40 cm","PM = MN = NP = 40 mm","PM = MN = NP = 400 mm","PM = MN = NP = 4 dm"],"correct":"2","level":"3","hint":"","answer":"<p>Ta có: 40 cm = 400 mm = 4 dm<\/p><p>Do \u0111ó <\/p><p>PM = MN = NP = 40 cm <span style=\"color:#16a085;\">\u0110úng <\/span><\/p><p>PM = MN = NP = 40 mm <span style=\"color:#e74c3c;\">Sai <\/span>vì PM = MN = NP = 400 mm <\/p><p>PM = MN = NP = 400 mm <span style=\"color:#16a085;\">\u0110úng<\/span><\/p><p>PM = MN = NP = 4 dm <span style=\"color:#16a085;\">\u0110úng<\/span><\/p><p>V\u1eady \u0111áp án là <span style=\"color:#16a085;\"><strong>PM = MN = NP = 40 mm<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"1","date":"2021-10-10 13:17:21","option_type":"txt","len":2},{"id":"9108","post_id":"4916","mon_id":"1158113","chapter_id":"1158129","question":"<p>\u0110i\u1ec1n s\u1ed1 thích h\u1ee3p vào ô tr\u1ed1ng.<\/p><p>Cho hình vuông DFEG có GF = 120 mm.<\/p><p><span class=\"svgedit\"><svg height=\"150\" width=\"180\"> <g><title><\/title><rect fill=\"#fff\" height=\"152\" id=\"canvas_background\" width=\"182\" 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><rect fill=\"#ffff56\" height=\"127\" id=\"svg_7\" stroke=\"#000\" stroke-width=\"1.5\" width=\"125\" x=\"25.9\" y=\"16.85\"><\/rect> <rect fill=\"#ffff56\" height=\"127\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"125\" x=\"25.9\" y=\"16.85\"><\/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=\"9.9\" xml:space=\"preserve\" y=\"17.85\">D<\/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=\"8.9\" xml:space=\"preserve\" y=\"142.85\">F<\/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=\"159.9\" xml:space=\"preserve\" y=\"142.85\">E<\/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=\"156.9\" xml:space=\"preserve\" y=\"18.85\">G<\/text> <line fill=\"none\" id=\"svg_6\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"26.90001\" x2=\"150.9\" y1=\"17.85\" y2=\"143.85\"><\/line> <line fill=\"none\" id=\"svg_9\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" transform=\"rotate(90 87.89999389648438,80.35001373291017) \" x1=\"25.4\" x2=\"150.39999\" y1=\"18.35001\" y2=\"142.35001\"><\/line> <\/g> <\/svg><\/span><\/p><p>Tính \u0111\u1ed9 dài DE.<\/p><p><strong>DE = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> cm<\/strong><\/p>","options":"","correct":["[\"12\"]"],"level":"3","hint":"","answer":"<p>Vì hình vuông DFEG có \u0111\u01b0\u1eddng chéo GF = 120 mm.<\/p><p>Nên \u0111\u01b0\u1eddng chéo <strong>DE = 120 mm = 12 cm<\/strong><\/p><p>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>12<\/strong><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"132","test":"1","date":"2021-10-10 13:24:48"}]}