问题补充:
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
答案:
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(图2)
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