如图,已知矩形ABCD沿着直线BD折叠,使点C落在C/处,BC/交AD于E,AD=8

如图,已知矩形ABCD沿着直线BD折叠,使点C落在C/处,BC/ADEAD=8AB=4,则DE的长为(   ).

A3         B4       C5       D6

答案

C

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