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三角形一边的中线如何求
更新时间: 2021-06-21 18:18:44  

1、三角形一条中线两侧所对边平方和等于底边的一半平方与该边中线平方的和的2倍。

2、即,对任意三角形△ABC,设是I线段BC的中点,AI为中线,则有如下关系:AB2+AC2=2BI2+2AI2,或作AB2+AC2=(BC)2+2AI2

关键词: 三角形 一边 中线 如何

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