1 All Physician Training licenses expire on August 31, 2015, are good for three years, and can only renew once (for a total of six years).  All Physician Assistant licenses expire on January 31 of even-numbered years.
Remember -- the sum of the degree measures of angles in any triangle equals 180 degrees. Below is a picture of triangle ABC, where angle A = 60 degrees, angle B = 50 degrees and angle C = 70 degrees. If we add all three angles in any triangle we get 180 degrees. So, the measure of angle A + angle B + angle C = 180 degrees. This is true for any triangle in the world of geometry. We can use this idea to find the measure of angle(s) where the degree measure is missing or not given.
Rating Newest Oldest. Best Answer: The exterior angle and the interior angle of a polygon form a linear pair (meaning they add to 180 degrees. Interior angles of a triangle always add to 180 degrees. In an equilateral triangle each angle is 60 degrees. Since exterior angle and interior angle add to 180 degrees. That means each exterior angle is 120 degrees.