如图,四边形ABCD和四边形ABEC均为平行四边形,点H为BE的中点,连接DH,分别交AC,BC于点F,G,已知平行四边形ABCD的面积为8cm2,则△ADF的面积为 ___ cm2.
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849477860745216/2853445661687808/STEM/d674ee2819ed4a36b75c9017e485faec.png?resizew=257)
更新时间:2021-11-22 08:39:20
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【推荐1】如图,
,
,点E、F 分别在边
、
上,点G为线段
上一动点,过点 G作EF 的垂线分别交
、
于点M、N.若线段
恰好平分矩形
的面积,且
则
的长为_______ .
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【推荐2】如图,□ABCD中,M是BC的中点,且AM=9,BD=12,AD=10,则该平行四边形的面积是___ .
![](https://img.xkw.com/dksih/QBM/2016/6/21/1574212943462400/1574212948959232/STEM/744b2afc666647b59043548b4b94a9c8.png?resizew=193)
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【推荐1】如图,AB∥CD,AB=
CD,S△ABO:S△CDO=_____ .
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【推荐2】如图,
是
斜边
上的中点,将
绕点
旋转,使得点
落在射线
上的点
处,点
落在点
处,边
的延长线交边
于点
.如果
.
.那么
的长为________ ;
的长为________ .
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