Find The Sum Of The Measures Of The Interior Angles Of The Convex Polygon With N Sides. A triangle is a polygon that has three sides and three angles. Interior angles of Triangles.
Find the sum of the measures of the interior angles of each convex polygon. By the Polygon Interior Angles Sum Theorem the sum of the interior angle measures can also be expressed as. Substitute n 18 in.
First use the Polygon Angle Sum Theorem to find the sum of the interior angles.
Find the sum of the measures of the interior angles of a convex polygon with 18 sides. 18 -gon 628721 An 18 -gon has eighteen sides. But the angle of the sum of all the types of interior angles is always equal to 180 degrees. Since all angles of a regular polygon are congruent the sum of the interior angle measures is 14x.