I would say that the angle would be an
exterior angle because it's usually between the side of the polygon connected by a line as an extension of the adjacent side.
here's an example. hope it helps!
It’s a!!!!!!!!!!!!!!!!!!!!!!!!
Approximately 3.47 meters is equal to 11.4 feet
Cot(-x) = 1 / tan(-x)
Tan(-x) * 1 / tan(-x) = 1