What is the measure of an interior angle of a regular dodecagon?

A regular dodecagon has n=12 equal sides.
The formula for the measure of each interior angle of a regular polygon with n sides is:

Interior Angle=
n
(n−2)×180
∘

​

Substituting n=12:

Interior Angle=
12
(12−2)×180
∘

​

Interior Angle=
12
10×180
∘

​

Interior Angle=10×15
∘
=150
∘