如图,AB=CD,AE=DF,CE=BF.[1]判断EC和BF

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 如图,AB=CD,AE=DF,CE=BF.[1]判断EC和BF 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 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 如图,AB=CD,AE=DF,CE=BF,判断EC和BF的关系,说明理由 如图10,若AB=CD,AE=DF,CE=BF,则AB与CD平行吗?为什么? 如下图,AB=DC,BF=CE,AE=DF,求证AB//CD 如图,在梯形ABCD中,AB//CD,AD=BC,点E,F在AB上,且AE=BF,连接CE,DF.求证：CE=DF . 如图,在等腰梯形ABCD中,AB平行CD,点E,F在AB上,且AE=BF,连接CE,DF.求证:CE=DF 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 AB=CD,AE垂直BC,DF垂直BC,CE=BF,求证AE=DF 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