如图,平行四边形的面积是20平方厘米,阴影三角形的面积是________ 平方厘米.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/10/d9f49365-a941-4d35-944d-bf7d203d4424.jpg?resizew=172)
更新时间:2023-10-10 11:05:39
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【知识点】 利用平行四边形的性质求解解读
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