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,BC/EF相交于点O,OA=OD,AE=DF,求证:EB‖CF 已知BC,EF交点O,AB//CD,OA=OD,AE=DF,求证BE//CF 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,已知AB‖CD,OA=OD,AE=DF,求证①△ABE≡△DCF②EB‖CF 如图，AB∥CD，OA=OD，点F、D、O、A、E在同一直线上，AE=DF，求证：EB∥CF． 如图,AB=CD,AE⊥BC于E,DF⊥BC于F,AD交EF于O,OA=OD,求证：BF=CE 已知:如图,AB,CD相交于点O,AC‖DB,OC=OD,E,F为AB上两点,且AE=BF,求证:CE//DF 已知：如图,AB、CD相交于点O,AC‖DB,OC=OD,E、F为AB上两点,且AE=BF,求证：CE//DF. 如图,已知ABⅡCD,OA=OD,AE=DF,求证：BEⅡCF. 如图,AD、BC相交于点O,OA=OD,AB//CD.求证：AB=CD 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