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8年级数学：等面积法求菱形的高，不要忽视菱形面积的2种表示方法
本节的内容主要讲述的是8年级下册第3章的内容：平行四边形，在本小节中涉及的是菱形面积的2种表示方法计算
8年级数学：人教版下册章节复习，同步+培优，分层练习，查漏补缺9/61
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