ab=dc,df=be,af=ce 求证△abe≌△cDF D0∥AB
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ab=dc,df=be,af=ce求证△abe≌△cDFD0∥ABab=dc,df=be,af=ce求证△abe≌△cDFD0∥AB ab=dc,df=be,af=ce求证△abe≌△cDF
ab=dc,df=be,af=ce 求证△abe≌△cDF D0∥AB
ab=dc,df=be,af=ce 求证△abe≌△cDF D0∥AB
ab=dc,df=be,af=ce 求证△abe≌△cDF D0∥AB
证明：∵AF=CE AC=AC
∴AC-AF=AC-CE
∴AE=CF
∵AB=CD BE=DF
∴⊿ABE≌⊿CDF
∴AB=CD
ab=dc,df=be,af=ce 求证△abe≌△cDF D0∥AB
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