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.

Explanation:

Answer:

The minimum degree of rotation by which a regular octagon can map onto itself is 45°. To get from \(A\) to \(C\) in clock - wise direction, since there are 2 intervals between \(A\) and \(C\) out of 8 equal intervals around the octagon, and each interval corresponds to 45°, it will take 2 increments of 45° of clock - wise rotation.
So the answers are: 45; 2