Hình tròn. Tâm, bán kính, đường kính của hình tròn

Home Toán lớp 3 - Tập 1 CHỦ ĐỀ 3 - LÀM QUEN VỚI HÌNH PHẲNG, HÌNH KHỐI Bài 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":"Tìm ch\u1ecdn các bán kính c\u1ee7a \u0111\u01b0\u1eddng tròn sau:<\/p><svg height=\"216\" width=\"225\"> <g><title><\/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><title><\/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":"\u0110\u01b0\u1eddng tròn trên có 4 bán kính g\u1ed3m: OA, OB, OC, OD<\/p>\u0110áp án c\u1ea7n ch\u1ecdn là: 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":"N\u1ed1i các c\u1ed9t phù h\u1ee3p v\u1edbi nhau \u0111\u1ec3 mô t\u1ea3 hình tròn sau:<\/p><svg height=\"177\" width=\"224\"> <g><title><\/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><title><\/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":[["Bán kính \u0111\u01b0\u1eddng tròn là:","\u0110\u01b0\u1eddng kính hình tròn là:","Tâm hình tròn là:"],["O","OA, OB, OC","AB"],["OA, OB, OC","AB","O"]],"correct":[2,0,1],"level":"1","hint":"","answer":"\u0110áp án \u0111úng là:<\/p>Bán kính hình tròn là: OA, OB, OC<\/span><\/strong><\/p>\u0110\u01b0\u1eddng kính hình tròn là: AB<\/span><\/strong><\/p>Tâm hình tròn là: 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":"Ch\u1ecdn kh\u1eb3ng \u0111\u1ecbnh \u0111úng nh\u1ea5t:<\/p><svg height=\"211\" width=\"259\"> <g><title><\/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><title><\/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":["1<\/strong>. O là tâm \u0111\u01b0\u1eddng tròn","2.<\/strong> E là tâm \u0111\u01b0\u1eddng tròn","3.<\/strong> CD là \u0111\u01b0\u1eddng kính \u0111\u01b0\u1eddng tròn","4.<\/strong> AB là bán kính \u0111\u01b0\u1eddng tròn"],"correct":"1","level":"1","hint":"","answer":"Quan sát hình tròn trên th\u1ea5y có OA = OB; O là tâm \u0111\u01b0\u1eddng tròn, bán kính OA, OB và \u0111\u01b0\u1eddng kính AB.<\/p>\u0110áp án \u0111úng: 1.<\/strong><\/span> O là tâm \u0111\u01b0\u1eddng tròn<\/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}]}