已知:如图,E﹑F是线段BC上的两点,AB∥CD,AB=DC,CE=BF.求证:AE=DF.
已知:如图,E﹑F是线段BC上的两点,AB∥CD,AB=DC,CE=BF.求证:AE=DF.
如图所示,已知点E、F在BC上,AB=DC,BF=CE. (1)若AE=DF,求证:CD∥AB (2
如图所示,已知E、F是线段AB上两点,且AE=BF,AD=BC,∠A=∠B,求证:DF=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,在梯形ABCD中,AB//CD,AD=BC,点E,F在AB上,且AE=BF,连接CE,DF.求证:CE=DF .
已知如图,点E,F在BC上BF=CE,AB=DC,AE=DF求证∠A=∠D
如图,已知,AB=CD,AE⊥BC于E点,DF⊥BC于F,AE=DF,求证CE=BF
已知:如图,AD=CD CE=BF DF=AE 求证AB‖DC
如图AB是圆O的直径,C、D为圆上两点,CE⊥CD交AB于E,DF⊥CD交AB于F,求证:AE=BF
如图,AB=CD,AE⊥BC,DF⊥BC,垂足分别为E,F,CE=BF,求证:AB∥CD.
如图,已知AB=CD,AE⊥BC于点E,DF⊥BC于点F,CE=BF连接AD,交EF于点O,求证:点O是线段AD中点