如图CD=AB,DF=BE,AE=CF,求证:DF//BE

如图,已知BE=DF,AE=CF,AE∥CF,说明AB∥CD 如图CD=AB,DF=BE,AE=CF,求证:DF//BE 如图,已知:BE=DF,AE=CF,AE平行CF.说明AB平行CD的理由 如图AB=CD,BE=CF,AE=DF求证OA=OD 如图,AB=CD,BE=DF,AE=CF,求证:EO=FO? 如图,AE=DF,CE=BF,AB=CD,证明BE平行CF 如图,已知AB平行CD,AD平行BC,AE=CF,说明BE=DF. 已知如图AB=CD AE=CF BE=DF请证明AB∥CD 如图,已知ABⅡCD,OA=OD,AE=DF,求证：BEⅡCF.注：平行=Ⅱ 1.已知,如图 AE垂直BD,CF垂直BD,AB=CD,BE=DF.求证AD平行CB 如图,在⊙O中,弦AB‖弦CD,弦AE‖弦CF,求证:BE=DF 如图 已知:ab∥cd ae⊥bd于e,cf⊥bd于f,be=df.说明ae=cd的理由. 已知AB=CD,BE=DF,AE=CF,问AB‖CD吗 已知：如图,AB=CD,BC=DA,AE=CF.求证：DF=DE 如图,DE垂直AB于E,DF垂直AC于F,若BD=CD,BE=CF,求AB+AC与AE之间的等量关系 已知AB=CD,AE=CF,BF=DE,说明:(1)BE=DF (2)BE//DF 已知：AB=CD,AE=CF,BF=DE,说明①BE=DF,②BE平行DF 已知AB=CD,AE=CF,BF=DE,说明:(1)BE=DF (2)BE//DF