Answer:
150°
Step-by-step explanation:
the sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
here n = 12 , then
sum = 180° × 10 = 1800°
the 12 interior angles of a regular polygon are congruent , then
interior angle = 1800° ÷ 12 = 150°
