AB=CD,DF⊥AC于F,BE⊥AC于E,DF=BE.试说明：AF=CE

已知AB=CD,AF=CE,BE⊥AC于E,DF⊥AC于F.求证：AB//CD AB=CD,DF⊥AC于F,BE⊥AC于E,DF=BE.试说明：AF=CE 如图,已知AD=BC,BE⊥AC于E,DF⊥AC于F,且BE=DF.求证AB‖CD 如图,AB‖CD,AD‖BC,BE⊥AC于E,DF‖AC于F,求证BE=DF谢. 如图,CD⊥AB,BE⊥AC,垂足分别为D、E,BE交CD于F,且AD=DF,求证：AC=BF 梯形ABCD中,AB//CD,AB>CD,AC= BC ,过B做BE⊥AD,交AC于F,连接DF,求证∠BFC=∠DFC 如图,AB=CD,AF=CE,BE⊥AC于E,DF⊥AC于F,试说明△ABE≌△CDF. 如图,AB=CD,AF=CE,BE⊥AC于E,DF⊥AC于F,求证△ABE≌△CDF 如图 AB=CD DF垂直于AC于F BE垂直于AC于E DF=BE 求AF=CE 如图,AB\CD,AD\BC,BE垂直于AC于E,DF垂直于AC于F,求证BE=DF.明天要交了急! 已知AB=CD,BE⊥AC于E,DF⊥AC于F,且BE=DF,求证：AB‖CD已知∠1=∠2,∠3=70度,求∠4的度数 已知：AD=BC,BE⊥AC于E,DF⊥AC于F,且BE=DF,求证：1.△ABE全等与△CDF；2.AB=CD；3.AB平行CD, 如图,CD⊥AB,BE⊥AC,垂足分别为D、E,交于CD于F,且AD＝DF,求证∶AC＝BF. 已知E、F在BC边上,AE⊥BC于E,DF⊥BC于F,且AC=BD,BE=CF,求证AB=CD △ABC中,AB=AC,AD是高,DE⊥AB于E,DF⊥DF于E,DF⊥于F.求证：BE=CF 如图,AB=AC,BD=CD,DE⊥AB于E,DF⊥AC于F,求证DE=DF, 如图,AB=AC,BD=CD,DE⊥AB于点E,DF⊥AC于点F.求证:DE=DF 如图,AB=AC,BD=CD,DE⊥AB于点E,DF⊥AC于点F.求证DE=DF