Answer:Number of Triangles: A regular polygon with n sides can be divided into n-2 triangles.Sum of Interior Angles: The sum of the interior angles of a polygon with n sides is (n-2) * 180 degrees.Sum of Exterior Angles: The sum of the exterior angles of any polygon (regular or irregular) is always 360 degrees.Measure of One Interior Angle: Divide the sum of interior angles by the number of sides.Measure of One Exterior Angle: Divide the sum of exterior angles (360 degrees) by the number of sides.