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正方形

> 下列说法中，不正确的是 A.既是矩形，又是菱形的四边形是正方形 B.正方形是对角线相等的菱形 C.正方形是对角线互相垂直的矩形 D.正方形是对角线互相平分的平行四边形

问题：

发布时间：2024-09-09

下列说法中，不正确的是

A.既是矩形，又是菱形的四边形是正方形
B.正方形是对角线相等的菱形
C.正方形是对角线互相垂直的矩形
D.正方形是对角线互相平分的平行四边形

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