如图,已知AB平行CD ,OA=OD,AE=DF 求证BE平行CF.谢谢了（图画的不好请见谅）.

如图,已知ABⅡCD,OA=OD,AE=DF,求证：BEⅡCF. 如图AB=CD,BE=CF,AE=DF求证OA=OD 已知BC,EF交点O,AB//CD,OA=OD,AE=DF,求证BE//CF 如图所示,已知AB平行CD,OA=OD,BC过O 点,E,F在直线AOD上且AE=DF.求证EB平行CF 如图：AB平行CD,OA=OD,点F、D、O、A、E在同一直线上,AE=DF 求证：EB平行CF（不一定要告诉我全部答案 如图AB=CD AF平行DF CF平行BE 求证AF=DE 如图,已知AB⊥BC,AE⊥EF,AC=DF,BE=CF.求证AC平行于DF. 如图,已知AB平行DE,AB=DE,BE=CF.求证：AC平行DF 如图,已知AB//CD.OA=OD,点F.D.O.A.E在同一条线上,AE=DF,求证,EB//CF 如图,已知AB‖CD,BC/EF相交于点O,OA=OD,AE=DF,求证:EB‖CF 如图,已知AB‖CD,OA=OD,AE=DF,求证①△ABE≡△DCF②EB‖CF 如图所示,已知AB=CD,BE=DF,△ABE全等于△CDF,求证;AB平行CD,AE平行CF