如图,已知AB平行DE,AB等于DE,AF等于DC,求证△ABC全等于△DEF.
问题描述:
如图,已知AB平行DE,AB等于DE,AF等于DC,求证△ABC全等于△DEF.
答
∵AB平行DE,∴∠A=∠D,又∵AF等于DC,∴AC=DF,AB=DE,∴△ABC全等于△DEF(SAS)
如图,已知AB平行DE,AB等于DE,AF等于DC,求证△ABC全等于△DEF.
∵AB平行DE,∴∠A=∠D,又∵AF等于DC,∴AC=DF,AB=DE,∴△ABC全等于△DEF(SAS)