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 AE=DF CE=BF AB=CD 问BE和CF平行吗?为什么? AB=CD,CE垂直DF,CE=DF,用平移知识证明,AE=BF 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 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 全等三角形AB=CD,AE=DF,CE=BF,求AE//DF 如图,AB=CD,AE=DF,CE=BF.[1]判断EC和BF 如下图,AB=DC,BF=CE,AE=DF,求证AB//CD 如图,已知,AB=CD,CE=DF,AE=BF,则CE‖DF吗?为什么? 如图,AB=CD,AE⊥BC,DF⊥BC,CE=BF,求证AE=DF 如图,AB=CD,AE⊥BC,DF⊥BC,CE=BF,求证AE=DF 点 A,B,C,D在同一直线上,AB=CD,CE//DF,CE=DF,试证明,AE=BF 已知:如下图,A.B.C.D在同一直线上,AB=CD,AE平行BF且AE=BF,则CE平行DF,试说明理由 已知:如图,AD=CD CE=BF DF=AE 求证AB‖DC 如图,AE=DF,CE=BF,AB=CD,证明BE平行CF