题目已知,如图AB=AEAB=AEAB=AE,∠B=∠E\angle B=\angle E∠B=∠E,BC=EDBC=EDBC=ED,AFAFAF平分∠BAE\angle BAE∠BAE,求证:AF⊥CDAF\bot CDAF⊥CD.知识点：圆周角定理I章节：图形的性质 / 圆
已知,如图,,,平分,求证:.已知,如图,,,平分,求证:.已知,如图,,,平分,求证:.