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如何判定两条直线平行
更新时间: 2020-09-16 00:00:00  

1、同位角相等,两直线平行;

2、内错角相等,两直线平行;

3、同旁内角互补,两直线平行。

或者:

1、平行于同一直线的两条直线平行;

2、垂直于同一直线的两直线平行。

关键词: 如何 判定 直线 平行

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