题干
已知：如图，B、E分别是AC、DF上一点，∠1=∠2，∠C=∠D．求证：∠A=∠F．
答案(点此获取答案解析）
证明：∵∠1=∠2，∠2=∠3，∴∠1=∠3，∴BD∥CE，∴∠C=∠DBA，∵∠C=∠D，∴∠D=∠DBA，∴DF∥AC，∴∠A=∠F
已知：如图，B、E分别是AC、DF上一点，∠1=∠2，∠C=∠D．求证：∠A=∠F．
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