AE=DF CE=BF AB=CD 问BE和CF平行吗?为什么?
AE=DF CE=BF AB=CD 问BE和CF平行吗?为什么?
已知,AE=DF,BF=CE,AE//df,问ab=cd吗?说明理由.
已知,AE=DF,BF=CE,AE//DF,问AB=CD吗
如图10,若AB=CD,AE=DF,CE=BF,则AB与CD平行吗?为什么?
如图,AB=CD,AE=DF,CE=BF,求证AE平行DF
如图,AB=CD,AE=DF,CE=BF,求证:AE平行DF
1.已知,AE=DF,BF=CE,AE‖DF,问AB=CD吗?说明理由.
已知AB=CD,BE=DF,AE=CF,问AB‖CD吗
如图,AB=CD,AE=DF,CE=BF.[1]判断EC和BF
5.如图,AB=CD,AE=DF,CE=BF,判断BE与CF的位置关系,并说明理由.
如图所示,AB=CD,AE=DF,CE=BF,求证 AE‖DF
AB=CD,AE垂直BC,DF垂直BC,CE=BF,求证AE=DF