如图所示的正方形网格中,△ABC的顶点均在格点上,在所给平面直角坐标系中解答下列问题:
![](https://img.xkw.com/dksih/QBM/2019/9/22/2296178541527040/2296727003226112/STEM/c438d44dc4fa44bfb7bde8dd8a9d96e7.png?resizew=154)
(1)将△ABC绕A点逆时针旋转90°至△AB1C1,画出旋转后的△AB1C1;
(2)画出△ABC关于原点成中心对称的△A
B
C
;
(3)过A. C. C1三点作⊙P,请直接写出点A
与⊙P的位置关系.
![](https://img.xkw.com/dksih/QBM/2019/9/22/2296178541527040/2296727003226112/STEM/c438d44dc4fa44bfb7bde8dd8a9d96e7.png?resizew=154)
(1)将△ABC绕A点逆时针旋转90°至△AB1C1,画出旋转后的△AB1C1;
(2)画出△ABC关于原点成中心对称的△A
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d68c9c1649a2fedf11b5b6358a898e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d68c9c1649a2fedf11b5b6358a898e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d68c9c1649a2fedf11b5b6358a898e6.png)
(3)过A. C. C1三点作⊙P,请直接写出点A
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d68c9c1649a2fedf11b5b6358a898e6.png)
更新时间:2019-09-23 08:05:57
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【推荐1】如图,在边长为1的正方形组成的网格中建立直角坐标系,
的顶点均在格点上,点
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,
的坐标分别是
,
.
向下平移3个单位,则点B的对应点坐标为______;
(2)将
绕点
逆时针旋转
后得到
,请在图中作出
,并求出这时点
的坐标为______;
(3)求旋转过程中,线段
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(3)求旋转过程中,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
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解答题-作图题
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【推荐2】如图,在平面直角坐标系中△ABC的三个顶点都在格点上,点A的坐标为(2,2),请解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/cb819ad5-edb0-49fe-a326-e59853183e4d.png?resizew=283)
(1)画出△ABC绕点B逆时针旋转90°后得到△A1B1C1,并写出点A1的坐标;
(2)画出和△A1B1C1关于原点O成中心对称的△A2B2C2,并写出点A2的坐标;
(3)在(1)的条件下,求BC在旋转过程中扫过的面积.
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(1)画出△ABC绕点B逆时针旋转90°后得到△A1B1C1,并写出点A1的坐标;
(2)画出和△A1B1C1关于原点O成中心对称的△A2B2C2,并写出点A2的坐标;
(3)在(1)的条件下,求BC在旋转过程中扫过的面积.
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解答题-作图题
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【推荐1】如图,方格纸中每个小方格都是边长为1个单位的正方形,在建立平面直角坐标系后,
的顶点均在格点上,已知点C的坐标为
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/dfad8749-4763-4c50-96ee-061ade6375df.png?resizew=312)
(1)画出以C为旋转中心,将
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(2)画出
关于原点O对称的
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(3)设D为x轴上一个动点,且四边形
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(1)画出以C为旋转中心,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f73e4d0557ca664d1edd70b7275667.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
(3)设D为x轴上一个动点,且四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6f2304ef5713211e6bc36e75f8f47c.png)
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解答题-作图题
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适中
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【推荐2】如图,平面直角坐标系中,每个小正方形边长都是1.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/1bb7a9e1-1097-4d71-8723-2be370a67e1a.png?resizew=338)
(1)作出
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(2)作出将
向右平移8个单位,向下平移6个单位的
.
(3)在
在平移至
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的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/1bb7a9e1-1097-4d71-8723-2be370a67e1a.png?resizew=338)
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