已知,AE=DF,BF=CE,AE//DF,问AB=CD吗

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 1.已知,AE=DF,BF=CE,AE‖DF,问AB=CD吗?说明理由. AE=DF CE=BF AB=CD 问BE和CF平行吗?为什么? 如图,AB=CD,AE=DF,CE=BF,求证AE平行DF 如图所示,AB=CD,AE=DF,CE=BF,求证 AE‖DF 如图,AB=CD,AE=DF,CE=BF,求证：AE平行DF AB=CD,AE垂直BC,DF垂直BC,CE=BF,求证AE=DF 如图 已知AB=CD,AE=DF,CE=BF.求证：AF=DE 已知:如图,AD=CD CE=BF DF=AE 求证AB‖DC 如图，AB=CD，AE⊥BC，DF⊥BC，CE=BF．求证：AE=DF． 如图,AB=CD,AE=DF,CE=BF.[1]判断EC和BF