If each interior angle of a regular polygon has a measure of 150°. how many total degrees are in the interior angles?

Answer 1

150 = (n - 2)(180) / n, formula for measure of one interior angle of regular polygon

150n = 180n - 360

-30n = 360

n = 12

Sum of inerior angles (a formula) = (n - 2)(180)

What is the sum?