题目如图，⊙O⊙O⊙O切△ABC\triangle ABC△ABC的边BCBCBC于点DDD，切ABABAB，ACACAC的延长线于点EEE，F.F.F.若△ABC\triangle ABC△ABC的周长为181818，则AEAEAE等于_________.知识点：切线长定理章节：图形的性质 / 圆
