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HomeToán lớp 3 - Tập 1CHỦ ĐỀ 3 - LÀM QUEN VỚI HÌNH PHẲNG, HÌNH KHỐIBài 17: Hình tròn. Tâm, bán kính, đường kính của hình trònBài tập cơ bản
{"common":{"save":0,"post_id":"6089","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2321","post_id":"6089","mon_id":"1158530","chapter_id":"1158594","question":"<p>T&igrave;m ch\u1ecdn c&aacute;c&nbsp;b&aacute;n k&iacute;nh c\u1ee7a \u0111\u01b0\u1eddng tr&ograve;n sau:<\/p><p><span class=\"svgedit\"><svg height=\"216\" width=\"225\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"218\" id=\"canvas_background\" width=\"227\" 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>&lt;title&gt;&lt;\/title><ellipse cx=\"120.20766\" cy=\"117.38077\" fill=\"#fff\" id=\"svg_3\" rx=\"81.15384\" ry=\"79.5\" stroke=\"#000\" stroke-width=\"1.5\"><\/ellipse> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_5\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"39.47815\" x2=\"201.46116\" y1=\"116.65386\" y2=\"118.19232\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_6\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"121.01621\" x2=\"119.72067\" y1=\"37.99028\" y2=\"196.65348\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.7563490867614746,0,0,0.7563490867614746,4.4678969438427885,29.902688125548593) \" x=\"21.67819\" xml:space=\"preserve\" y=\"120.49398\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" transform=\"matrix(0.7563490867614746,0,0,0.7563490867614746,4.4678969438427885,29.902688125548593) \" x=\"266.62217\" xml:space=\"preserve\" y=\"122.58157\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" transform=\"matrix(0.7563490867614746,0,0,0.7563490867614746,4.4678969438427885,29.902688125548593) \" x=\"147.6295\" xml:space=\"preserve\" y=\"0.10958\">C<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" transform=\"matrix(0.7563490867614746,0,0,0.7563490867614746,4.4678969438427885,29.902688125548593) \" x=\"144.15018\" xml:space=\"preserve\" y=\"242.96597\">D<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" transform=\"matrix(0.7563490867614746,0,0,0.7563490867614746,4.4678969438427885,29.902688125548593) \" x=\"160.15505\" xml:space=\"preserve\" y=\"110.75189\">O<\/text> <\/g> <\/svg><\/span><\/p>","options":["AB","OA","OC","OD"],"correct":"[\"2\",\"3\",\"4\"]","level":"1","hint":"","answer":"<p>\u0110\u01b0\u1eddng tr&ograve;n tr&ecirc;n c&oacute; 4 b&aacute;n k&iacute;nh g\u1ed3m: OA, OB, OC, OD<\/p><p>\u0110&aacute;p &aacute;n c\u1ea7n ch\u1ecdn l&agrave;:<span style=\"color:#16a085;\"><strong> OA, OC, OD<\/strong><\/span><\/p>","type":"checkbox","extra_type":"flower","time":"0","user_id":"129","test":"1","date":"2022-08-11 15:22:01","option_type":"txt","len":0},{"id":"2322","post_id":"6089","mon_id":"1158530","chapter_id":"1158594","question":"<p>N\u1ed1i c&aacute;c c\u1ed9t ph&ugrave; h\u1ee3p v\u1edbi nhau \u0111\u1ec3 m&ocirc; t\u1ea3 h&igrave;nh tr&ograve;n sau:<\/p><p><span class=\"svgedit\"><svg height=\"177\" width=\"224\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"179\" id=\"canvas_background\" width=\"226\" 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>&lt;title&gt;&lt;\/title><ellipse cx=\"111.4\" cy=\"90.15\" fill=\"#fff\" id=\"svg_1\" rx=\"80.5\" ry=\"79.5\" stroke=\"#000\" stroke-width=\"2\"><\/ellipse> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_2\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"2\" x1=\"30.06251\" x2=\"192.72555\" y1=\"88.90625\" y2=\"90.78125\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"2\" x1=\"110.06251\" x2=\"146.31251\" y1=\"88.90625\" y2=\"19.53125\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"7.56251\" xml:space=\"preserve\" y=\"95.15625\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"197.56251\" xml:space=\"preserve\" y=\"95.15625\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"100.68751\" xml:space=\"preserve\" y=\"113.28125\">O<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"146.5299\" xml:space=\"preserve\" y=\"18.60734\">C<\/text> <\/g> <\/svg><\/span><\/p>","options":[["B&aacute;n k&iacute;nh \u0111\u01b0\u1eddng tr&ograve;n l&agrave;:","\u0110\u01b0\u1eddng k&iacute;nh h&igrave;nh tr&ograve;n l&agrave;:","T&acirc;m h&igrave;nh tr&ograve;n l&agrave;:"],["O","OA, OB, OC","AB"],["OA, OB, OC","AB","O"]],"correct":[2,0,1],"level":"1","hint":"","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;:<\/p><p><strong>B&aacute;n k&iacute;nh h&igrave;nh tr&ograve;n l&agrave;:&nbsp;<span style=\"color:#16a085;\">OA, OB, OC<\/span><\/strong><\/p><p><strong>\u0110\u01b0\u1eddng k&iacute;nh h&igrave;nh tr&ograve;n l&agrave;:<span style=\"color:#16a085;\">&nbsp;AB<\/span><\/strong><\/p><p><strong>T&acirc;m h&igrave;nh tr&ograve;n l&agrave;: <span style=\"color:#16a085;\">O<\/span><\/strong><\/p>","type":"matching","extra_type":"mat_txt","time":"0","user_id":"129","test":"1","date":"2022-08-11 15:24:02"},{"id":"2323","post_id":"6089","mon_id":"1158530","chapter_id":"1158594","question":"<p>Ch\u1ecdn kh\u1eb3ng \u0111\u1ecbnh&nbsp;\u0111&uacute;ng nh\u1ea5t:<\/p><p><span class=\"svgedit\"><svg height=\"211\" width=\"259\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"213\" id=\"canvas_background\" width=\"261\" 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>&lt;title&gt;&lt;\/title><ellipse cx=\"132.91077\" cy=\"113.06934\" fill=\"#fff\" id=\"svg_1\" rx=\"89\" ry=\"87.6129\" stroke=\"#000\" stroke-width=\"2.5\"><\/ellipse> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_2\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"2\" x1=\"41.85546\" x2=\"220.08057\" y1=\"113.42756\" y2=\"113.42756\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"2\" x1=\"58.79088\" x2=\"215.24188\" y1=\"61.81486\" y2=\"141.65325\"><\/line> <ellipse cx=\"132.03743\" cy=\"113.29607\" fill=\"#fff\" fill-opacity=\"null\" id=\"svg_4\" rx=\"1.47264\" ry=\"1.74438\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"2.5\"><\/ellipse> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"20.75046\" xml:space=\"preserve\" y=\"119.98364\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"227.27133\" xml:space=\"preserve\" y=\"118.35321\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"35.42431\" xml:space=\"preserve\" y=\"61.83171\">C<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.8835578560829163,0,0,1.0104001560669575,16.00723844630875,-3.7941744346713766) \" x=\"121.62212\" xml:space=\"preserve\" y=\"137.91835\">O<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.7963701486587523,0,0,0.8588725328445433,30.603834190773338,11.782792863057693) \" x=\"160.96726\" xml:space=\"preserve\" y=\"109.11412\">E<\/text> <ellipse cx=\"160.29818\" cy=\"113.52972\" fill=\"#fff\" fill-opacity=\"null\" id=\"svg_10\" rx=\"1.47264\" ry=\"1.51074\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"2.5\"><\/ellipse> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"220.74961\" xml:space=\"preserve\" y=\"155.30958\">D<\/text> <\/g> <\/svg><\/span><\/p>","options":["<strong>1<\/strong>. O l&agrave; t&acirc;m \u0111\u01b0\u1eddng tr&ograve;n","<strong>2.<\/strong> E l&agrave; t&acirc;m \u0111\u01b0\u1eddng tr&ograve;n","<strong>3.<\/strong> CD l&agrave; \u0111\u01b0\u1eddng k&iacute;nh \u0111\u01b0\u1eddng tr&ograve;n","<strong>4.<\/strong> AB l&agrave; b&aacute;n k&iacute;nh \u0111\u01b0\u1eddng tr&ograve;n"],"correct":"1","level":"1","hint":"","answer":"<p>Quan s&aacute;t h&igrave;nh tr&ograve;n tr&ecirc;n th\u1ea5y c&oacute; OA = OB; O l&agrave; t&acirc;m \u0111\u01b0\u1eddng tr&ograve;n, b&aacute;n k&iacute;nh OA, OB v&agrave; \u0111\u01b0\u1eddng k&iacute;nh AB.<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng: <span style=\"color:#16a085;\"><strong>1.<\/strong><\/span>&nbsp;<span style=\"color:#16a085;\"><strong>O l&agrave; t&acirc;m \u0111\u01b0\u1eddng tr&ograve;n<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"129","test":"1","date":"2022-08-11 15:25:32","option_type":"txt","len":3}]}
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