如图,AB是
的直径,弦
于点G,点F是CD上一点,且满足
,连接AF并延长交
于点E,连接AD、DE,若
.下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d98e16c6ac1e0f16aa396b41c435fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940c046a2c0bdb5383657047db156581.png)
A.![]() | B.![]() |
C.![]() | D.DC平分![]() |
更新时间:2022-11-02 21:45:20
|
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【推荐1】如图,己知在
中,
,点C,D,
点在同一条直线上,连接
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba609e8d47d6f4a51c454db50693192.png)
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A. ![]() | B.![]() |
C.若![]() ![]() | D.![]() |
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【推荐2】如图,半径为
的
是正六边形
的外接圆,过点
作
的切线交
的延长线于点
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/afb11ea7-02fe-462b-8635-16237017484c.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】已知
,
为半径是3的圆周上两点,
为
的中点,以线段
,
为邻边作菱形
,顶点
恰在该圆直径的三等分点上,则该菱形的边长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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名校
【推荐2】如图
是
的直径,
是弦,四边形
是平行四边形,
与
相交于点P,以下说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/a5b61cca-bee8-4691-a43e-4df54875d1c0.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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A. ![]() | B. ![]() | C. ![]() | D.![]() |
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【推荐1】如图,在平面直角坐标系中,点A,B的坐标分别为
,过A,O,B三点作圆,点C 在第一象限部分的圆上运动,连接
,过点 O作
的垂线交
的延长线于点 D.下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dee0f01bb202399da1a0cb6ccd2773c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a178613dcc7f9b9f70f0ede8ab58be.png)
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A.圆的半径是![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】如图,点
是
的内心,连接
并延长交
于点
,交
的外接圆于点
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.以下结论中正确的有( )
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A.![]() ![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在⊙O中,AB为直径,BC为切线,弦AD
OC,直线CD交BA的延长线于点E,连接BD.下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/4a1070c2-f959-4a54-9cc3-6124f10fb5c7.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/4a1070c2-f959-4a54-9cc3-6124f10fb5c7.png?resizew=156)
A.CD是⊙O的切线 | B.CO⊥DB |
C.△EDA∽△EBD | D.![]() |
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【推荐2】在等边
中,
,AD是边BC上的中线,点E是BD上点(不与B、D重合),点F是AC上一点,连接EF交AD于点G,
,以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
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A.当EF//AB时,![]() | B.当![]() ![]() |
C.![]() | D.点G可能是AD的中点 |
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