如图所示,画出△ABC绕点O逆时针旋转60°后得到的△DEF,使A,B,C的对应点分别为D,E,F.
![](https://img.xkw.com/dksih/QBM/2018/2/13/1881617286291456/1881996735578112/STEM/687f0cfa4d6b439b9c3f42cf1881011c.png?resizew=58)
更新时间:2018-02-14 09:15:04
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解答题-作图题
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较难
(0.4)
【推荐1】如图,在每个小正方形边长为
的网格中,
的顶点
均在格点上,
是以
为圆心,
为半径的一段圆弧,请用无刻度的直尺画图(保留连线痕迹).
(1)
的长为 ;
(2)将线段
绕点
逆时针旋转得到
,旋转角为
(
) ,连接
.
①如图 1,若
是
的中点,请在网格中画出
,使
;
![](https://img.xkw.com/dksih/QBM/2020/6/13/2483964726124544/2491391594405888/STEM/4ad1d6d191bb4d86941de9ba09e89d6b.png?resizew=250)
②如图 2,连接
,请在网格中画出点
,使
的值最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f5e21d225bf3c159ddf3876fbb8fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39241313d2652c4fd6bd1ebe8c055350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393c3f6abef3928bc78677a64fa0e8d9.png)
①如图 1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7a1a06b9df3661ec1400e86819535a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ecd9bab10eb31e2ca51886f6c466928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc24f21891c9974efd4843031519911.png)
![](https://img.xkw.com/dksih/QBM/2020/6/13/2483964726124544/2491391594405888/STEM/4ad1d6d191bb4d86941de9ba09e89d6b.png?resizew=250)
②如图 2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4f07750ff6dfe2e6c1b0bc3a75cabd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7a1a06b9df3661ec1400e86819535a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0475b7eada723dd748db65d1fcadc1.png)
![](https://img.xkw.com/dksih/QBM/2020/6/13/2483964726124544/2491391594405888/STEM/6a272af238bb4d978e3bd07fa6d152a9.png?resizew=254)
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解答题-作图题
|
较难
(0.4)
【推荐2】在平面直角坐标系中,已知
,
,
,请选择适当的格点,用无刻度的直尺画图,保留画图痕迹.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/40954776-4768-4b02-a43c-e86c97b84bcf.png?resizew=213)
(1)以O点为旋转中心,将
逆时针方向旋转
得
,画出
,并写出
的坐标______;
(2)画出A关于直线
的对称点D;
(3)在
上画点P,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d63f0b05d54522c263ab394064093b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/40954776-4768-4b02-a43c-e86c97b84bcf.png?resizew=213)
(1)以O点为旋转中心,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)画出A关于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a854f7f21e1b4d572bb9a9f5388ce9b.png)
您最近一年使用:0次