理由：作点B关于AD的对称点F,连结FD、FE则△AFD≌△ABD∴∠AFD＝∠B＝45°,∠FAD＝∠BAD,BD＝FD∵∠DAE＝45°∴∠BAD＋∠CAE＝45°＝∠DAE＝∠FAD＋∠FAE∴∠FAE＝∠CAE∵AF＝AB＝AC∴△AFE≌△ACE∴∠AFE＝∠C＝45...