如图,在边长为1的正方形网格中建立平面直角坐标系,已知△ABC中A(﹣1,2)、B(2,1)、C(4,5).
![](https://img.xkw.com/dksih/QBM/2021/4/13/2698718773714944/2700180630257664/STEM/df5a8c3e-f53b-4215-964e-fe499d588bd9.png)
(1)画出△ABC关于x轴对称的△A1B1C1;
(2)以原点O为位似中心,在x轴的上方画出△A2B2C2,使△A2B2C2与△ABC位似,且△A2B2C2与△ABC相似比为2,并写出A2、B2、C2的坐标.
![](https://img.xkw.com/dksih/QBM/2021/4/13/2698718773714944/2700180630257664/STEM/df5a8c3e-f53b-4215-964e-fe499d588bd9.png)
(1)画出△ABC关于x轴对称的△A1B1C1;
(2)以原点O为位似中心,在x轴的上方画出△A2B2C2,使△A2B2C2与△ABC位似,且△A2B2C2与△ABC相似比为2,并写出A2、B2、C2的坐标.
2019·宁夏银川·一模 查看更多[4]
2019年宁夏银川市第十五中学九年级下学期一模数学试题2021年安徽省淮南市东部地区中考数学第五次联考试题(已下线)江苏省苏州市甫里中学2020-2021学年八年级下学期数学练习题安徽省安庆市桐城市第二中学2021-2022学年九年级上学期期中数学试题
更新时间:2021-04-15 08:34:28
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相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】已知
在平面直角坐标系中如图所示,
,
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/1bd9f025-b942-46b0-a690-8e0635c8101c.png?resizew=182)
(1)求出
的面积;
(2)画出
关于x轴对称的
;
(3)在x轴上求一点P,使
最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eae019053ae564f08c01487f7ff7986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98ef6b26186130f8d88c66d3b3c78fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dd02ef5bf6f4fd27de63840cf97021.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/1bd9f025-b942-46b0-a690-8e0635c8101c.png?resizew=182)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(3)在x轴上求一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac656ec89607f52b5353dba400fab6.png)
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解答题-作图题
|
适中
(0.65)
真题
名校
【推荐2】如图,在平面直角坐标系中,已知
的三个顶点坐标分别是
,
.
向上平移4个单位,再向右平移1个单位,得到
,请画出
.
(2)请画出
关于
轴对称的
.
(3)将
着原点
顺时针旋转
,得到
,求线段
在旋转过程中扫过的面积(结果保留
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0376bf329dd483b467af88a7d7b38d9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5fe7124d244c15e6ae2614bc0f577f.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)
(2)请画出
![](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/828dc8dc7259c510b6d63abf40f60e90.png)
(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9be9dd0c6b8db3b2e20c3043297c022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d77f02e8eb6827be9c42cdd153ccddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,方格纸中的每个小方格都是边长为1个单位长度的正方形,
的顶点都在格点上,建立如图所示的平面直角坐标系.
(1)将
向左平移8个单位长度后再向下平移10个单位长度,请画出经过两次平移后得到的
,并写出点
的坐标;
(2)以原点
为位似中心,将
缩小,使变换后得到的
与
对应边的比为
.请在网格内画出在第一象限内的
,并写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/30/d3e8f266-8346-44e2-84cb-68a306d2355a.png?resizew=282)
(1)将
![](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)
(2)以原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d784d007ece10be0a89d7ca6c13037f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐2】如图,在平面直角坐标系中,已知
三个顶点的坐标分别是
,
,
.、
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/9275f424-2e94-42ce-834d-f3033bc60f20.png?resizew=166)
(1)以点
为位似中心,将
缩小为原来的
得到
,请在
轴下方画出
;点
为
内的一点,则点
在
内部的对应点
的坐标为_______.
(2)
外接圆的圆心坐标为_______,外接圆的半径是_______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bdfc750fe0ace842a461e89f2b7b290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d429efe96d68065e7d433c996682791d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482e275f64c80bb9ae0acef9f9481947.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/9275f424-2e94-42ce-834d-f3033bc60f20.png?resizew=166)
(1)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.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/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,
在坐标平面内三顶点的坐标分别为
,
,
.以点
为位似中心,在图中画出
,使它与
相似,且相似比为
,并写出
各顶点的坐标.(只需画出一种情况
);
________,________
,
________,________
,
________,________![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d6b02e123609d28e41d6d260bba55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5dc0cf7a5946ea9efb859190c806aa.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7988923407b9abb78ef8ab45829678fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf088a16206ef197178665caa292c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/9/cd3e931e-96a6-419e-b5e4-ccbbc20488bb.jpg?resizew=203)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】已知:
在直角坐标平面内,三个顶点的坐标分别为
、
、
(正方形网格中每个小正方形的边长是1个单位长度).
关于
轴的轴对称图形为
,则点
的坐标是 ;
(2)以点
为位似中心,在网格内画出
;使
与
位似,且位似比为
,则点
的坐标是 ;
(3)
的面积是 平方单位.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc878a5fd7b508cf817cbb65d3940547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232f941eb8c4345cf49137746a2461b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647c97da671781944dcbac93af7cadcb.png)
![](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/b1241216f3c1cb5e73043dd1037f556d.png)
(2)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.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/bbe103f073845122c66f22dcb14b711f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
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