如图,圆内接四边形ABCD中,∠BCD=90°,AB=AD,点E在CD的延长线上,且DE=BC,连结AE,若AE=4,则四边形ABCD的面积为_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/89dba7d5-8cdf-438e-8e21-ce6760528c42.png?resizew=153)
更新时间:2019-04-15 22:54:28
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