如图所示的网格中,每个小方格都是边长为
的小正方形,
,
![](https://img.xkw.com/dksih/QBM/2018/11/2/2066855067508736/2068243115950080/STEM/670c695093194bcf8654e3f1412054c3.png?resizew=191)
把
绕点
按顺时针旋转
后得到
,请画出这个三角形并写出点
的坐标;
以点
为位似中心放大
,得到
,使放大前后的面积之比为
,请在下面网格内出
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bde4f2bcf1d0f4171cbc704f96b6d6d.png)
![](https://img.xkw.com/dksih/QBM/2018/11/2/2066855067508736/2068243115950080/STEM/670c695093194bcf8654e3f1412054c3.png?resizew=191)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b826293fd7cf6dc42bfc221346e6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12d93bd1130088b622602a6c21c9c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bcc65bfd96beeb5f6a788d47ccdcf16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ed513f56811aa1d314514c5c10d90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92186285f012cadddd4e7333e1572fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f64d2096a47d39db22e0e2108715368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ba8c987c610773135cd5200d8bcee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f64d2096a47d39db22e0e2108715368.png)
更新时间:2018-11-04 12:34:18
|
【知识点】 在坐标系中画位似图形解读
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】已知
是坐标原点,
,
两点的坐标分别为
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/af5ed792-b7ca-4548-bd60-0e9aff0089a6.png?resizew=233)
(1)以
点为位似中心在
轴的左侧将
放大到两倍,
,
两点的对应点分别为
,
画出图形;
(2)直接写出
的坐标是________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631386549c0cec5981a1da47b05e5d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/af5ed792-b7ca-4548-bd60-0e9aff0089a6.png?resizew=233)
(1)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(2)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】在正方形网格中,每个小正方形的边长为1,
在平面直角坐标系中的位置如图所示.
的位似图形
,使
与
的位似比为
,并写出点
的坐标;
(2)作出
绕点C顺时针旋转
后的图形
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe103f073845122c66f22dcb14b711f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)作出
![](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/22ebf04bf1911cfd8566b4350fd6d41e.png)
您最近一年使用:0次