已知:如图,AD=BC,AB=CD,DE=BF求证:BE=DF
已知:如图,AD=BC,AB=CD,DE=BF求证:BE=DF
已知如图,AB+AD=BC+CD,求证BF+DF=BE+DE
如图,已知:AB=DC,AD=BC,DE=BF.求证:BE=DF.
如图,已知AB=CD,AD=BC,DE=BF,说明BE=DF
r如图,已知AB=CD,AD=CB,DE=BF,求证:BE=DF
如图AB=DC,AD=BC,DE=BF求证BE=DF
如图,AD=BC,AB=DC,DE=BF,求证BE=DF
如图,AB=DC,AD=BC,DE=BF,求证:BE=DF
如图,ad=bc,ab=cd,de=bf,说明df=be
在四边形ABCD中,已知AB=CD,AD=BC,DE=BF,求证BE=DF
在四边形ABCD中,已知AB=CD,AD=BC,DE=BF.求证BE=DF
已知AB=DC,AD=BC,DE=BF.求证BE=DF