如图,在边长为1的正方形网格中,
、
、
、
.
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091605505556480/3101830290472960/STEM/75df1e24a29d45bbb8ee6cfeadae2f6a.png?resizew=226)
(1)将线段
绕点
逆时针旋转,得到对应线段
.当
与
第一次平行时,画出点
运动的路径;
(2)线段
与线段
存在一种特殊关系,即其中一条线段绕着某点旋转一个角度可以得到另一条线段,直接写出这个旋转中心的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffe17c304a7f157998c7fcf19283964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f2bba8303c05689ef4538e98e8929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6234d1a633d371fa271f08a6df365f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8c838f50354d9da042594b8896c432.png)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091605505556480/3101830290472960/STEM/75df1e24a29d45bbb8ee6cfeadae2f6a.png?resizew=226)
(1)将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
更新时间:2022-11-03 19:52:47
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相似题推荐
解答题-问答题
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适中
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名校
【推荐1】已知,点
.试分别根据下列条件,求出点P的坐标.
(1)点P在过点
,且与y轴平行的直线上;
(2)点P在第四象限内,且到x的距离是它到y轴距离的一半.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294e72e00b3e59876ff9988614ad69db.png)
(1)点P在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd162f6b5ea3023b9126daf61e76428.png)
(2)点P在第四象限内,且到x的距离是它到y轴距离的一半.
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,三角形ABC沿x轴正方向平移2个单位长度,再沿y轴负方向平移1个单位长度得到三角形EFG.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/c5d73060-d523-4fd4-83e4-119f1646be98.png?resizew=156)
(1)写出图中点A,B,C的坐标;
(2)画出平移后的三角形EFG;
(3)求三角形EFG的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/c5d73060-d523-4fd4-83e4-119f1646be98.png?resizew=156)
(1)写出图中点A,B,C的坐标;
(2)画出平移后的三角形EFG;
(3)求三角形EFG的面积.
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,
三个顶点的坐标分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e1824b542a68c38bc25b33cc7c50b.png)
(1)请画出将
关于原点O成中心对称的图形
;
(2)若
以点A为旋转中心逆时针旋转
后得到的图形为
;(B的对应点为
,C的对应点为
)则点
的坐标为
、
、
;
(3)在x轴上找一点P,使
的值最小,则点P的坐标为 .(直接写出答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e1824b542a68c38bc25b33cc7c50b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/13/9b554acc-01ee-45a7-b31c-2355bbbc9437.png?resizew=198)
(1)请画出将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)若
![](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/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2c9fa3a8c2ae2a31824d3c9321102f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(3)在x轴上找一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,
的三个顶点分别是
,
,
.
向左平移
个单位后得到对应的
,请画出平移后的
.
(2)把
绕原点
旋转
后得到对应的
,请画出旋转后的
.
(3)观察图形可知,
与
关于点(______,______)中心对称.
(4)在平面上是否存在点
,使得以
、
、
、
为顶点的四边形是平行四边形,若存在,请直接写出符合条件的所有点
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d9a25d20b86c2583f6c071091e8e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f579dffa5d64fb195b6dcdac3899a31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73b6c3a1e416f084ba1e4b13166f742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
(3)观察图形可知,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
(4)在平面上是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】如图所示,四边形ABCD中,∠ECF=∠CDA,CD⊥AD于点D,△BEC旋转后能与△DFC重合.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/e77a8824-f527-4809-8597-795d7c7f22a9.png?resizew=153)
(1)旋转中心是哪一点?
(2)旋转了多少度?
(3)若∠EBC=30°,∠BCE=80°,求∠F的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/e77a8824-f527-4809-8597-795d7c7f22a9.png?resizew=153)
(1)旋转中心是哪一点?
(2)旋转了多少度?
(3)若∠EBC=30°,∠BCE=80°,求∠F的度数.
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解答题-问答题
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适中
(0.65)
【推荐2】如图,已知点
,
,
,
,连接
,
,将线段
绕着某一点旋转一定角度,使其与线段
重合(点
与点
重合,点
与点
重合).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/f288d4a6-1b50-460c-8555-fcf64b19c824.png?resizew=263)
(1)则在这个旋转过程中旋转中心的坐标为________.
(2)说明旋转角为
.
(3)线段
旋转与线段
重合,则线段
所扫过图形面积为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d429efe96d68065e7d433c996682791d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dd02ef5bf6f4fd27de63840cf97021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70266fb643d70a15ab3b48d5245dc982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/f288d4a6-1b50-460c-8555-fcf64b19c824.png?resizew=263)
(1)则在这个旋转过程中旋转中心的坐标为________.
(2)说明旋转角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次