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怎样判断两条直线是异面直线

更新时间: 2020-09-21 00:00:00     

1、异面直线的定义为:不同在任何一个平面内的两条直线叫做异面直线;

2、判定方法为:既不平行也不相交的两条直线是异面直线;

3、作异面直线的方法:做平面内一点与平面外一点的连线,该直线与此平面内不经过该点的直线,互为异面直线。

关键词: 怎样 判断 直线

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