如图,四边形ABCD是平行四边形,点E在BC的延长线上,且CE=BC,AE=AB,AE、DC相交于点O,连接DE.若∠AOD=120°,AC=4,则CD的大小为( )
![](https://img.xkw.com/dksih/QBM/2019/9/18/2293185190707200/2294090686111744/STEM/2532e8b3b4684efb965cbc9a329d409f.png?resizew=173)
![](https://img.xkw.com/dksih/QBM/2019/9/18/2293185190707200/2294090686111744/STEM/2532e8b3b4684efb965cbc9a329d409f.png?resizew=173)
A.8 | B.4![]() | C.8![]() | D.6![]() |
更新时间:2019-09-21 17:08:52
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【推荐1】如图,在▱ABCD中,AB=1,AC=4
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A.2 | B.3 | C.4 | D.6 |
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【推荐2】如图,在
中,
,
,点
在
边上以
的速度从点
向点
运动,点
在
边上以
的速度从点
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到达点
时停止(同时点
也停止运动).设运动
(其中
时,以
四点组成的四边形是平行四边形,则
的所有可能取值为( )
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