如图,在边长为1的正方形网格中,
的顶点均在格点上,点A的坐标为
,点B的坐标为
.
绕点B顺时针旋转
后得到的
;
(2)画出
关于原点O对称的
,此时点
的坐标为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ea81ea6ed007cb23f72bc1a4b30e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508fa4303c29161b939ff98d6721be17.png)
![](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/7988923407b9abb78ef8ab45829678fa.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
22-23八年级下·江苏盐城·期中 查看更多[3]
江苏省盐城市东台市实验中学2022-2023学年八年级下学期期中数学试题江苏省盐城市东台市实验中学教育集团2022-2023学年八年级下学期期中数学试题(已下线)第9章 中心对称图形-平行四边形 全章高频考点专练(4种专练+10个题型+3种思想)原卷版
更新时间:2023-07-16 07:35:52
|
相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐1】如图,△ABC三个顶点分别为A(1,1),B(4,2),C(3,4).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/e300a41d-4866-4d93-a5ca-c59c22af4bf9.png?resizew=238)
(1)请面出△ABC向左平移5个单位长度后得到的△A1B1C1,此时B1的坐标为________;
(2)请画出△A1B1C1绕点A1顺时针旋转90°的△A2B2C2;并写出点B2的坐标为________;
(3)在(1)的变换过程中线段CB扫过的面积为________;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/e300a41d-4866-4d93-a5ca-c59c22af4bf9.png?resizew=238)
(1)请面出△ABC向左平移5个单位长度后得到的△A1B1C1,此时B1的坐标为________;
(2)请画出△A1B1C1绕点A1顺时针旋转90°的△A2B2C2;并写出点B2的坐标为________;
(3)在(1)的变换过程中线段CB扫过的面积为________;
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】如图,在平面直角坐标系中,点O为坐标原点,已知
三个顶点坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/a853d15a-75c1-4ecd-b7eb-68a5e1228c96.png?resizew=266)
(1)画出
关于x轴对称的
,点A,B,C的对称点分别是点
,
,
,直接写出点
的坐标:
____________;
(2)画出
绕原点O顺时针旋转
后得到的
,并求出
所扫过的面积是_____.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e286f9fe08bd88ea5fa343bf140684d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b80da010e77e948075685c79c295c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6661220ca4f6aabb003fd55ae437654.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/a853d15a-75c1-4ecd-b7eb-68a5e1228c96.png?resizew=266)
(1)画出
![](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/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(2)画出
![](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/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a122e25cf4eb9f03ffe5ec823bfc31.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
名校
【推荐1】如图,方格中每个小正方形的边长都是单位1,
在平面直角坐标系中的位置如图
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/141b83dd-de0b-4936-8801-abb7d7c4bcfd.png?resizew=223)
(1)画出
关于原点成中心对称的
;
(2)画出将
绕点
逆时针方向旋转
得到的
;并写出
和
的坐标.
( ),
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/141b83dd-de0b-4936-8801-abb7d7c4bcfd.png?resizew=223)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)画出将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a90b11e46f2a26fcc8ae7b6ade1dbe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】如图,在平面直角坐标系
中,
.
(1)以点B为中心,把
逆时针旋转
,画出旋转后的图形
,写出点
的坐标.
(2)在(1)中的条件下,求点C经过的路径弧
的长.(结果保留π);
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7726d7ddadcb50d2368de1833c34d23e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/c0e786a5-05f4-40b3-86e9-e5be080f4317.png?resizew=224)
(1)以点B为中心,把
![](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/ae889d84afeeaecd2771dcb480562255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4918922956b72a1faaebcd0515b0dc64.png)
(2)在(1)中的条件下,求点C经过的路径弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c236cc0f297f86bef73b31fbfce3c8c.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【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O为原点,点A,B的坐标分别是
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/d370ca8e-ba35-489e-9f65-f9c197778b37.png?resizew=234)
(1)若
关于原点对称的三角形为
,则
的坐标为 ;
(2)将
绕点O逆时针旋转90°后得到
,请在图中作出
并求出这时点
的坐标;
(3)在(2)中的旋转过程中,求出点A的运动轨迹的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643b31966f52a03f001f2e613cd701dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1282cc43ebf4b459832fec04d805989.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/d370ca8e-ba35-489e-9f65-f9c197778b37.png?resizew=234)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7dc2fe5d920e74d0941b8c1db9ec04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d098990cc285dce3b41e9f7d26275b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d098990cc285dce3b41e9f7d26275b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
(3)在(2)中的旋转过程中,求出点A的运动轨迹的长度.
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】如图,
各顶点的坐标分别为A(4、4),B(-2,2),C(3,0),
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/2a04216e-4a77-4265-a350-0078fc7c8a00.png?resizew=250)
(1)画出
关于原点O对称的
;
(2)直接写出
三点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/18/2a04216e-4a77-4265-a350-0078fc7c8a00.png?resizew=250)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(2)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d100e7830d2e9d27bdccb181c79b65.png)
您最近一年使用:0次