如图,己知AB//DC,且AB=CD,BF=DE,求证:AE//CF,AF//CE.
如图,己知AB//DC,且AB=CD,BF=DE,求证:AE//CF,AF//CE.
1.如图,点E,F在BD上,且BF=DE,AF=CE,AE=CF求证:(1)AB=CD(2)AB//DC
已知AB‖DC,AB=CD,BF=DE,求证:AE‖CF,AF‖CE
如图,已知AB=DC AE=DF .CE=BF 求证:AF=DE
如图,已知AB=DC,AE=DF,CE=BF,求证:AF=DE
如图 已知AB=CD,AE=DF,CE=BF.求证:AF=DE
如图,AB=DC,DE=BF,AE=CF.求证:DC∥AB
如图,已知AB平行DC,AB=DC,AE=CF,求证:BF=DE
如图,cd=ab,af=ce,de=bf.求证ab平行cd.
如图,已知AB=DC,AE=DF,CE=BF,求证AF=DE
如图,AB=DC,AE=DF,CE=BF,试说明AF=DE
已知:如图,AB=CD DE垂直AC BF垂直AC E、F是垂足 ,DE=BF.求证:AF=CE 且AB平行CD.