如图所示,已知AB=CD,BE=DF,AE=CF,求证:OA=OC,OE=OF

已知如图所示,AB平行于CD,AB=CD,BE平行于DF.试证明:BE=DF 如图所示,已知AB=CD,BE=DF,AE=CF,求证:OA=OC,OE=OF 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 已知AB=CD,BE=DF,AE=CF,问AB‖CD吗 如图所示,已知AB=CD,BE=DF,AE=CF.那么,AO和CD,EO和FO分别相等吗?为什么? 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 如图所示,已知：AB⊥MN,CD⊥MN,垂足分别为B,D,∠1=∠2,求证：BE‖DF.注意格式!图 已知:点A、F、E、C、在同一条线上,AF=CE,BF平行DF,BE=DF.求证:AB平行CD 已知如图AB=CD AE=CF BE=DF请证明AB∥CD 如图,已知AB‖CD,AB=CD,AF=CE,试说明BE=DF 已知ab平行cd,ab=CD,BE=DF,求证af平行ce,ae=cf 已知AB=CD,AF=CE,BE⊥AC于E,DF⊥AC于F.求证：AB//CD 已知:如图,AD=BC,AB=CD,DE=BF求证:BE=DF 已知AB=CD,BE=DF,∠ABE=∠CDF,求证AE∥CF 已知AB=CD,BE=DF,AF=CE 求证：△ABE≌△CDF 如图,已知AB平行CD,AD平行BC,AE=CF,说明BE=DF.