如图,已知
为坐标原点,
,
两点坐标为
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/6618d31b-9d57-4de1-a8bb-955c1b7f368f.png?resizew=258)
(1)在
轴的左侧以
点为位似中心将
放大到原来的2倍,画出放大后
;
(2)写出
的坐标;
(3)在(1)条件下,若
内部有一点
的坐标为
,请直接写出
的对应点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/ccbfff9a05b85a815235a94098f994e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/6618d31b-9d57-4de1-a8bb-955c1b7f368f.png?resizew=258)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd1186463c4f8907be9a3fde719c995.png)
(2)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd37eb19c389dfc22118927aa9c6cd7.png)
(3)在(1)条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
更新时间:2021-03-13 20:16:00
|
相似题推荐
解答题-作图题
|
适中
(0.65)
名校
【推荐1】如图,在由边长为1的单位正方形组成的网格中,按要求画出坐标系及△A1B1C1及△A2B2C2;
(1)若点A、C的坐标分别为(-3,0)、(-2,3),请画出平面直角坐标系并指出点B的坐标;
(2)画出△ABC关于y轴对称再向上平移1个单位后的图形△A1B1C1;
(3)以图中的点D为位似中心,将△A1B1C1作位似变换且把边长放大到原来的两倍,得到△A2B2C2.
(1)若点A、C的坐标分别为(-3,0)、(-2,3),请画出平面直角坐标系并指出点B的坐标;
(2)画出△ABC关于y轴对称再向上平移1个单位后的图形△A1B1C1;
(3)以图中的点D为位似中心,将△A1B1C1作位似变换且把边长放大到原来的两倍,得到△A2B2C2.
![](https://img.xkw.com/dksih/QBM/2015/9/22/1573913441755136/1573913447735296/STEM/5b2df841-140f-4f17-b7d8-aa491eab7715.png?resizew=230)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,
的顶点都在网格点上,点A的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/136ab47d-4560-4d60-95d0-8ad6777b7cdf.jpg?resizew=238)
(1)以点O为位似中心,把
按
放大,在y轴的左侧,画出放大后的
;
(2)点A的对应点D的坐标是______;
(3)
______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74415d7bd115454770f123ee207f637c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/136ab47d-4560-4d60-95d0-8ad6777b7cdf.jpg?resizew=238)
(1)以点O为位似中心,把
![](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/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)点A的对应点D的坐标是______;
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dcf353ddf8fbfd41970aa3c528e8d1.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,△ABC在坐标平面内,三个顶点的坐标分别为A(0,3),B(3,4),C(2,2)(正方形网格中,每个小正方形的边长均是1个单位长度).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/ff9db0b9-9830-4ec1-9219-1848c1019724.png?resizew=226)
(1)△A1B1C1与△ABC关于x轴成轴对称,请画出△A1B1C1,并写出C1点的坐标;
(2)以点B1为位似中心,将△A1B1C1放大得到△A2B1C2,放大前后的面积之比为1:4,画出△A2B1C2,使它与△A1B1C1在位似中心同侧,并写出C2点的坐标;
(3)连接AC2、CC2,判断△ACC2的形状并直接写出结论.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/ff9db0b9-9830-4ec1-9219-1848c1019724.png?resizew=226)
(1)△A1B1C1与△ABC关于x轴成轴对称,请画出△A1B1C1,并写出C1点的坐标;
(2)以点B1为位似中心,将△A1B1C1放大得到△A2B1C2,放大前后的面积之比为1:4,画出△A2B1C2,使它与△A1B1C1在位似中心同侧,并写出C2点的坐标;
(3)连接AC2、CC2,判断△ACC2的形状并直接写出结论.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,
的三个顶点坐标分别为
(
,1),
(
,4),
(
,2).以原点
为位似中心,位似比为1:2,在
轴的左侧,画出
放大后的图形![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285d58eb609dd79da485c7ba22bb9e4e.png)
,并直接写出
点坐标;
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/6b9409f78c82471da49f1cc3d0bcda57.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/e66b05f2e5644340b7f76754cfb3cfe1.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/cb14d809e0af47c2b2784f0f903cc3d7.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/d12908aea5fb4166bb4b4ddc38f8350d.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/86e8e2fa726942b3ad0aa3b188a488cb.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/2e7abe03bef64ee7a1ebfa71bdb30fb6.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/da7572578c244d59bebadb4c6f65c3bb.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/af83eeb2a9334276bfc21ab6670dacba.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/3e5b1b0a8d4244888d83e57d283d70ee.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/6b9409f78c82471da49f1cc3d0bcda57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285d58eb609dd79da485c7ba22bb9e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/784ba8baea942f72ed970168c3f0fd48.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/68142d9d1f834de4a0106de5629f8c24.png)
![](https://img.xkw.com/dksih/QBM/2015/4/1/1578627168944128/1578627169296384/STEM/f4924b28267c40178070c4e1e9a1d9f3.png)
您最近一年使用:0次