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,已知点E、F在BC上,AB=DC,BF=CE.(1)若AE=DF,求证：CD∥AB(2)若CD∥AB,求证：AE∥DF