题目如图,在长方形纸片ABCDABCDABCD中,AB=8cmAB=8cmAB=8cm,AD=6cmAD=6cmAD=6cm.把长方形纸片沿直线ACACAC折叠,点BBB落在点EEE处,AEAEAE交DCDCDC于点FFF,则AFAFAF的长为( )A.254cm\dfrac{25}{4}cm425cmB.152cm\dfrac{15}{2}cm215cmC.7cm7cm7cmD.132cm\dfrac{13}{2}cm213cm知识点:勾股定理章节:图形的性质 / 三角形