Question

Find the measure of an interior angle of a rectangular dodecagon (12 sided polygon)

Answer 1

150°

Explanation:

I assume the dodecagon is regular, and that you meant "regular" instead of "rectangular."

For any regular, convex polygon with n sides,

the measure of one interior angle is (n - 2)180°/n.

For a dodecagon, n = 12.

m = (12 - 2)(180°)/12

m = 150°