Can any angle be selected at random as one of the interior angles of some regular polygon

A regular polygon, by definition, is an n-sided two-dimensional shape that has equal sides. Since the sides are equal, the interior angles are also equal. Therefore, the answer is yes. You can choose any interior angle in a regular polygon because they all have the same value.

18/25 = 72%
1/4 = 25%
5/1 = 500%
1/20 = 5%
37/100 = 37%
33/20 = 165%