—— does your brother play on the computer?
—— He often plays Seer and Mole manor(摩尔庄园).
goodbye
如图,E、F分别是正方形ABCD的边BC、CD上的点,BE=CF,连接AE、BF.将△ABE绕正方形的对角线交点O按顺时针方向旋转到△BCF,则旋转角是( )