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垂直是一个几何术语。当两根相交直线或线段的夹角为90度，即直角时，称它们是“互相垂直”的。

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几何学

Lot (Mathematik) | Perpendicular | Perpendicular | Perpendicularité | אנך | 垂直 | Loodrecht (meetkunde)

 

This article is licensed under the GNU Free Documentation License. It uses material from the "垂直".

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