1. If the sum of the interior angles of a polygon is 540 degrees, then how many sides does the polygon have?a. 5b. 6c. 7d. 8 2. What is the measure of one angle in a regular 16-gon?a. 2,520 degrees b. 202.5 degrees c. 157.5 degreesd. 78.75 degrees 3. The measure of each exterior angle of a regular pentagon is______ the measure of each exterior angle of a regular nonagon. a. greater than b. less than c. equal to