Question

ABCDEFGH is a regular octagon. The minimum degree of rotation by which this octagon can map onto itself is 30 45 90 120 °. It will take 2 4 6 8 increments of that degree of clockwise rotation for A′ (the image of A) to coincide with C.

Answer 1

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

Answer 2

The minimum is angle x.
What is the measure of angle x?

Answer 3

45?

Answer 4

Exactly!