Answer:
5 sides
Explanation:
the sum of the interior angle and exterior angle = 180°
sum the parts of the ratio, 2 + 3 = 5 parts , then
180° ÷ 5 = 36° ← value of 1 part of the ratio
exterior angle = 2 × 36° = 72°
the sum of the exterior angles of a polygon = 360°
since the polygon is regular then the exterior angles are congruent , so
number of sides = 360° ÷ 72° = 5