如图,已知A.B.C.D在一条直线上,AB=CD,BE⊥AD,CF⊥AD,AE=DF.求证:AF=DE

因为：AB=CD AE=DF EB⊥AD FC⊥AD所以：BE=CF因为：EB⊥AD FC⊥AD BE=CF所以：EF//BC因为：BE=CF AB=CD AE=DF EB⊥AD FC⊥AD所以：∠AEB=∠DFC因为：EF//BC EB⊥AD FC⊥AD∠AEB=∠DFC所以：∠AEF=∠DFE因为：∠AEF=...