题目内容
如图:∠EAF=15°,AB=BC=CD=DE=EF,则∠DEF等于( )
A:90° B: 75° C:70° D: 60°
如图,∠EAF=15°,AB=BC=CD=DE=EF,则∠DEF等于 ( )
A. 90 B.75° C.60° D.45°