单选题 较难0.4 引用4 组卷1908
如图,矩形ABCD中,E是BC上一点,连接AE,将矩形沿AE翻折,使点B落在CD边F处,连接AF,在AF上取点O,以O为圆心,OF长为半径作⊙O与AD相切于点P.若AB=6,BC=3
,则下列结论:①F是CD的中点
;②⊙O的半径是2;③AE=
CE;④S阴影=
.其中正确的个数为( )
![](https://img.xkw.com/dksih/QBM/2019/2/16/2142028102361088/2143102601158656/STEM/93a1260616474040bbd3c6ab2d9ec9ab.png?resizew=174)
![](https://img.xkw.com/dksih/QBM/2019/2/16/2142028102361088/2143102601158656/STEM/984c51352fbc46b8a810dc6e21d43dc9.png?resizew=5)
![](https://img.xkw.com/dksih/QBM/2019/2/16/2142028102361088/2143102601158656/STEM/93a1260616474040bbd3c6ab2d9ec9ab.png?resizew=174)
A.1 | B.2 | C.3 | D.4 |
17-18九年级·甘肃·单元测试
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