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什么是垂线段它有什么性质

更新时间: 2020-09-17 00:00:00     

定义:当两条直线相交所成的四个角中,有一个角是直角时,就说这两条直线互相垂直,其中的一条直线叫做另一条直线的垂线段,它们的交点叫做垂足。性质:直线外一点与直线上各点连接的所有线段中,垂线段最短。简称垂线段最短。

关键词: 什么 垂线 性质

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