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,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=FB.求证:AE∥DF 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 如图,ab=cd,ae=df,ce=fb,求证af=de 如图,AB=CD,AE=DF,CE=BF.[1]判断EC和BF 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 如图(13)所示,点A,B,C,D在同一条直线上,AB=CD,CE∥DF,CE=DF,试说明AE=BE 数学八年级上册全等三角形习题如图,AB=CD,AE平分BC,DF平分BC,CE=BF,求证AE=DF. 如图,AB=CD,AE⊥BC,DF⊥BC,垂足分别为E,F,CE=BF.求证AE=DF 如图K-10-14所示AB=CD AE=DF CE=BF 求证 AE平行于DF