如图,在□ABCD中,AD=5,点E、F分别是BD、CD的中点,则EF=______
![](https://img.xkw.com/dksih/QBM/2019/12/6/2349308072919040/2350048545431552/STEM/210cc09e9c49485899fba23603538fd7.png?resizew=129)
更新时间:2019-12-10 09:09:45
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【推荐1】如图,在平行四边形ABCD中,AD=3cm,AB=2cm,则平行四边形ABCD的周长等于_____ .
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