ABCDEFGH is a regular octagon. The minimum degree of rotation by which this octagon can map onto itself is
°. It will take
increments of that degree of clockwise rotation for A′ (the image of A) to coincide with C.

Question

ABCDEFGH is a regular octagon. The minimum degree of rotation by which this octagon can map onto itself is 
°. It will take 
 increments of that degree of clockwise rotation for A′ (the image of A) to coincide with C.

Hoodmemes · Answer

If you rotate the octagon counterclockwise, how much ( what is the minimum) do you need to rotate to have the octagon look the same