如图,△A'B'C'是△ABC以点O为位似中心经过位似变换得到的,若AA':OA'=2:3,则下列说法错误的是( )
![](https://img.xkw.com/dksih/QBM/2021/12/28/2889497959759872/2946674140323840/STEM/ac0efa71c7e8439a89231810065afd1e.png?resizew=221)
![](https://img.xkw.com/dksih/QBM/2021/12/28/2889497959759872/2946674140323840/STEM/ac0efa71c7e8439a89231810065afd1e.png?resizew=221)
A.△A'OB'∽△AOB |
B.A'B'//AB |
C.点O到A'B'与AB的距离之比为3:5 |
D.△A'B'C'与△ABC的面积之比为3:5 |
21-22九年级上·河南南阳·期末 查看更多[6]
河南省邓州市2021-2022学年九年级上学期期末质量评估数学试题河南省南阳市邓州市2021-2022学年九年级上学期期末数学试题(已下线)专题4.30 图形的位似(巩固篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)(已下线)专题27.25 位似(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(人教版)(已下线)专题6.26 图形的位似(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(苏科版)第23章 图形的相似 23.5 画相似图形华东师大版(2012)九年级上册课后作业
更新时间:2022-03-29 14:46:47
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】如图,在直角坐标系中,矩形
的顶点
在原点,边
在
轴上,
在
轴上,如果
与
关于点
位似,且
的面积等于
面积的
,则点
的坐标为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/46ee0dfa-6458-4f1b-b9c7-77cfccfc8a45.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17feedef8b38275d0b9bf982a5478ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17feedef8b38275d0b9bf982a5478ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/46ee0dfa-6458-4f1b-b9c7-77cfccfc8a45.png?resizew=171)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在△ABC中,点D、E分别是AB、AC的中点,则下列结论不正确的是( )
![](https://img.xkw.com/dksih/QBM/2013/3/4/1573606944194560/1573606997360640/STEM/5086f23024ed4a158b19b2e6b1c3a0e5.png)
![](https://img.xkw.com/dksih/QBM/2013/3/4/1573606944194560/1573606997360640/STEM/5086f23024ed4a158b19b2e6b1c3a0e5.png)
A.![]() | B.△ADE∽△ABC |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系中,已知点A(﹣2,﹣6),B(﹣4,﹣2),以原点O为位似中心,把△OAB缩小为原来的
,则点A在第一象限的对应点A′的坐标是( )
![](https://img.xkw.com/dksih/QBM/2020/5/26/2470781407166464/2471601850834944/STEM/9bd504c304584b5a858a1bc6320a78e3.png?resizew=159)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2020/5/26/2470781407166464/2471601850834944/STEM/9bd504c304584b5a858a1bc6320a78e3.png?resizew=159)
A.(1,3) | B.(2,1) | C.(![]() ![]() | D.(﹣1,﹣3) |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在
的网格中,每个小正方形边长均为
,
的顶点均为格点,
为
中点,以点
为位似中心,相似比为
,将
放大,得到
,则
=( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/7de26a59-ea5e-4a4b-b8ba-843303fa6f84.png?resizew=117)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dde0704f1cbf18977df5b4799b4d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884e4bec1a5258d57d8084893d6989bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f022b18f3b30bccee515df5e47ff00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/7de26a59-ea5e-4a4b-b8ba-843303fa6f84.png?resizew=117)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次