如图,在平面直角坐标系中,
三个顶点坐标分别为
,
,
.
(1)画出
关于y轴对称的图形
;
(2)以原点O为位似中心,位似比为
,在y轴的左侧,画出
放大后的图形
.
(3)填空:直接写出点
的坐标______;
与
的周长比是______;
与
的面积比是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1294434b22cb5133043a2270ae1c43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9f2b482e8a8e0e1b5c720a3574af70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0c259686106ec529409abbf6549d97.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/4b9f331f-a453-49b2-bea9-9cc995e2b435.png?resizew=243)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)以原点O为位似中心,位似比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
(3)填空:直接写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
更新时间:2023-12-10 08:16:49
|
相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐1】如图,在
的正方形网格中,每个小正方形的边长都为1,网格中有一个格点
(即三角形的顶点都在格点上).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/7b0f7897-3adb-49d3-943d-5fcab9c10763.png?resizew=223)
(1)在图中作出
关于直线
对称的
(要求点
,
,
分别是点
,
,
的对应点);
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23f3b42cd6069f0e461035e76459ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/7b0f7897-3adb-49d3-943d-5fcab9c10763.png?resizew=223)
(1)在图中作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.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,在下列带有坐标系的网格中,△ABC的顶点都在边长为1的小正方形的顶点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/0bb177ba-7245-4861-87d4-c5fe606f5131.png?resizew=213)
(1)请画出△ABC关于y轴对称的图形(其中
分别是A、B、C的对应点,不写画法);
(2)直接写出
三点的坐标;
(3)平面内任一点P(x,y)关于直线x轴对称点的坐标为 .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/0bb177ba-7245-4861-87d4-c5fe606f5131.png?resizew=213)
(1)请画出△ABC关于y轴对称的图形(其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f843f696075e0f59f326bf08c8f631.png)
(2)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f843f696075e0f59f326bf08c8f631.png)
(3)平面内任一点P(x,y)关于直线x轴对称点的坐标为 .
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,
三个顶点的坐标分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/76af35aa-9a06-45dc-a28f-972cac086092.jpg?resizew=224)
(1)若
与
关于y轴成轴对称,请在网格中画出![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)写出
三顶点坐标:
__________,
__________,
__________;
(3)若点P为x轴上一点,使
最小(保留作图痕迹).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde97018e8d2b7698ae82b723469a025.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/76af35aa-9a06-45dc-a28f-972cac086092.jpg?resizew=224)
(1)若
![](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/4310db23fc79936c7182361e652bab1a.png)
(2)写出
![](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)
(3)若点P为x轴上一点,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知:等边
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/8d85973b-961c-47e4-ad6d-8292df8fb71c.png?resizew=158)
(1)建立适当的平面直角坐标系,求出
各个顶点的坐标:
(2)若在这个坐标系中作
关于
轴的对称图形
,点
为AB上的一点,则点M在
上的对应点
的坐标为_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/8d85973b-961c-47e4-ad6d-8292df8fb71c.png?resizew=158)
(1)建立适当的平面直角坐标系,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若在这个坐标系中作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e0db273061d0331e4e5da9ff1e955e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.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,方格纸中的每个小正方格都是边长为1的正方形,我们把以格点间连接为边的三角形称为“格点三角形”,图中的
就是格点三角形,在建立平面直角坐标系后,点A的坐标为
.
(1)将
沿
轴向左平移3个单位,得到
,画出
;
(2)将
以
为位似中心放大2倍,得到
,画出
;
(3)写出
、
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9380e202ab1225e25dada64dfb99ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/61051393-ae75-4698-836f-2e62c77b0f41.png?resizew=208)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)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/3a90b11e46f2a26fcc8ae7b6ade1dbe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a90b11e46f2a26fcc8ae7b6ade1dbe4.png)
(3)写出
![](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)
名校
【推荐2】如图,在平面直角坐标系中,△ABC的三个顶点的坐标分别为点A(1,0) B(3,0)、C(0,1).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/5e7b1a76-3c94-48ea-af10-6f03f80eb578.png?resizew=182)
(1)①以点M(2,2)为位似中心,在网格区域内画出
,使得
与
位似,且点D与点A对应,位似比为2:1;
②点D坐标为___________;
(2)
的面积为___________个平方单位.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/5e7b1a76-3c94-48ea-af10-6f03f80eb578.png?resizew=182)
(1)①以点M(2,2)为位似中心,在网格区域内画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
②点D坐标为___________;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.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个单位长度的小正方形组成的11×11网格中,已知点A(-3,-3),B(-1,-3),C(-1,-1).
(1)画出△ABC;
(2)画出△ABC关于x轴对称
,并写出各点的坐标;
(3)以O为位似中心,在第一象限画出将△ABC放大2倍后的
.
(1)画出△ABC;
(2)画出△ABC关于x轴对称
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
(3)以O为位似中心,在第一象限画出将△ABC放大2倍后的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403590d719951bd6133479f4e52041bc.png)
![](https://img.xkw.com/dksih/QBM/2019/3/26/2169026375712768/2176626205974528/STEM/e08adc844d9942799fa10de47c378f38.png?resizew=189)
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,的顶点都在格点上.
(1)以原点O为位似中心画
![](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/37d65e051e943ab28fa57aee2fb57994.png)
(2)写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
您最近一年使用:0次