如图,D为等腰三角形ABC的底边BC上的任意一点,AD的延长线交
的外接圆于点E,连接BE、CE,则图中相似三角形共有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/a09d4336-513f-47ea-bc1e-add0626554de.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/a09d4336-513f-47ea-bc1e-add0626554de.png?resizew=130)
A.8对 | B.6对 | C.4对 | D.2对 |
更新时间:2020-12-29 15:51:30
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【推荐1】如图,已知直线AB、CD相交于点O,OE平分∠COB,若∠BOD=70°,则∠COE的度数是( )
![](https://img.xkw.com/dksih/QBM/2015/3/1/1573802784276480/1573802790141952/STEM/0ab227168355425d81541ccf156ec17e.png?resizew=170)
![](https://img.xkw.com/dksih/QBM/2015/3/1/1573802784276480/1573802790141952/STEM/0ab227168355425d81541ccf156ec17e.png?resizew=170)
A.45° | B.70° | C.55° | D.110° |
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【推荐2】下列说法中,正确的是( )
A.相等的角是对顶角 |
B.若![]() ![]() ![]() |
C.过一点有一条而且仅有一条直线垂直于已知直线 |
D.若一个角的余角和补角都存在,则这个角的补角一定比这个角的余角大![]() |
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【推荐1】如图,
内接于
,
为
的直径,且
于点
,连接
.若
,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8117b8e89b9aa4ed51fbaa8df8381c25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bff54e322b8ae2849a14523b831f583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在
中,
于D,
于E,连接
.若
,则点C到
的距离的最大值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/a34d1ef7-242b-4467-8d8c-87b847273c67.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe4e9f5b80b776e890a1869b0f48f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d9beaeb05733c9d4a32519a130aec6.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/a34d1ef7-242b-4467-8d8c-87b847273c67.png?resizew=157)
A.3 | B.6 | C.![]() | D.![]() |
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【推荐1】如图的△ABC中有一正方形DEFG,其中D在AC上,E、F在AB上,直线AG分别交DE、BC于M、N两点.若∠B=90°,AB=4,BC=3,EF=1,则BN的长度为何?( )
![](https://img.xkw.com/dksih/QBM/2017/6/12/1707386700455936/1708815240339456/STEM/5d49334a801d4ecdb2f03a28868b2a4d.png?resizew=99)
![](https://img.xkw.com/dksih/QBM/2017/6/12/1707386700455936/1708815240339456/STEM/5d49334a801d4ecdb2f03a28868b2a4d.png?resizew=99)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】下列命题中,假命题的是( )
A.分别有一个角是![]() |
B.两个矩形一定相似 |
C.若![]() ![]() |
D.有一个角相等的两个菱形相似 |
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