分别指出下列各命题的题设和结论。 同旁内角互补,两直线平行。

分别指出下列各命题的题设和结论。

同旁内角互补,两直线平行。

答案

题设:两条直线被第三条直线所截的同旁内角互补。

       结论:这两条直线平行。

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