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菱形的判定定理是哪几个说下

更新时间: 2020-08-19 00:00:00     

1、一组邻边相等的平行四边形是菱形;

2、四边相等的四边形是菱形;

3、关于两条对角线都成轴对称的四边形是菱形;

4、对角线互相垂直且平分的四边形是菱形,依次连接四边形各边中点所得的四边形称为中点四边形。

关键词: 菱形 判定 定理

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