如图,网格中小正方形的边长为1,
与
是位似图形.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/c93c9464-68b4-46be-8090-31738d85205f.png?resizew=161)
(1)在网格中建立平面直角坐标系,使得点A的坐标为
,点
的坐标为
,并写出点B的坐标;
(2)以点A为位似中心,在网格中作
,使
和
位似,且位似比为
;
(3)在(1)的条件下,标出
和
的位似中心P.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/c93c9464-68b4-46be-8090-31738d85205f.png?resizew=161)
(1)在网格中建立平面直角坐标系,使得点A的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c304742ffa59bb3a7f5b738fc6e3e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941fc033fe9ca1c2082c7eb861da652c.png)
(2)以点A为位似中心,在网格中作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2930578bccee950983d455b3c066435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2930578bccee950983d455b3c066435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
(3)在(1)的条件下,标出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
更新时间:2024-03-02 14:59:22
|
相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐1】
在平面直角坐标系xOy中的位置如图所示.
关于点C成中心对称的
;
(2)以
为位似中心,在图中画出将
面积放大4倍后的
,计算
的面积并直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d542d6a10970a4f6ca6a495e6b9c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d542d6a10970a4f6ca6a495e6b9c1c.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
|
较易
(0.85)
【推荐2】如图,在平面直角坐标系中,
的三个顶点坐标分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/5c46b62b-3628-4273-a0f6-91ed4e4151d3.jpg?resizew=231)
(1)
绕原点
逆时针旋转
,画出旋转后得到的
,并求边
在旋转过程中扫过的图形面积;
(2)以原点
为位似中心,位似比为
,在
轴的右侧,画出
放大后的图形
.如果点
在线段
上,那么请直接写出点
的对应点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85df75e14f5544a7f9ef12770382805.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/5c46b62b-3628-4273-a0f6-91ed4e4151d3.jpg?resizew=231)
(1)
![](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/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)以原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc0da9bf8bf6b5007d2f14f9f885579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/9de07306fe4bb9852e1136cbac862d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐1】
在平面直角坐标系中的位置如图所示,已知点
,
,
.
与
是以点
为位似中心的位似图形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/825a20f5-efe3-454d-91b4-0c3e3aae8be2.png?resizew=261)
(1)请画出点
的位置,并写出点
的坐标是______;
(2)以点
为位似中心,在
轴左侧画出
的位似图形
,使相似比为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee6f55f5de53781cc0e1c61f9fc5995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5cfe573223e810a9f8777dcf2efea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18b2c2f73200153055c42fa0ee6ff57.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/825a20f5-efe3-454d-91b4-0c3e3aae8be2.png?resizew=261)
(1)请画出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/cf1c295fd10f4dcc21955ce39560b5c6.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】在平面直角坐标系中,△ABC的三个顶点坐标分别为A(1,0),B(0,−2),C(2,−1);
![](https://img.xkw.com/dksih/QBM/2019/11/13/2332851481305088/2333171858849792/STEM/4c483e163e874666a6a04321def3c928.png?resizew=222)
(1)以原点O为位似中心,在第二象限画出△A1B1C1,使△A1B1C1与△ABC的位似比为2:1;
(2)点P(a,b)为线段AC上的任意一点,则点P在△A1B1C1中的对应点P1的坐标为 .
![](https://img.xkw.com/dksih/QBM/2019/11/13/2332851481305088/2333171858849792/STEM/4c483e163e874666a6a04321def3c928.png?resizew=222)
(1)以原点O为位似中心,在第二象限画出△A1B1C1,使△A1B1C1与△ABC的位似比为2:1;
(2)点P(a,b)为线段AC上的任意一点,则点P在△A1B1C1中的对应点P1的坐标为 .
您最近一年使用:0次