Answer, i am so number 12, 13, and 14. i would really appreciate it is you , step by step.

The sum of the measures of the interior angles of a polygon of n sides is
(n - 2)180

If a polygon is regular, than all angles are congruent.
The polygon has n sides and n angles, so each angle measures
[(n - 2)180]/n

In problems 12, 13, and 14, you are given the measure of one angle of a regular polygon.
Set the measure equal to the formula above, and solve for n, the number of sides.

12.











6 sides

13.











5 sides

14.











8 sides

For range i think it’s area