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如何算出一个平行四边形的面积

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对边相互平行的四边形即可定义为平行四边形。在几何学学习中，你可能需要求出平行四边形的面积。本文将教给你如何求平行四边形的面积。

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底边长即平行四边形底边的长度。
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高的长度就是从平行四边形的底边到定边的垂直线的长度。
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