Angle Theorem Interior Sum
Interior angle = sum of the interior angles of a polygon / n. where “n” is the number of. This theorem states that the sum of the measures of the interior angles of a convex polygon with n sides. Theorem 39: if a convex polygon has n sides, then its interior angle sum is given by the following equation: s = ( n −2) × 180°. the polygon in figure 1 has seven sides, so using theorem 39 gives: an exterior angle of a polygon is formed by extending only one of its sides. the nonstraight angle adjacent to an interior angle is the exterior angle. Oct 15, 2013 learn about the interior and the exterior angles of a polygon. a polygon is a plane shape bounded by a finite chain of straight lines. the interior . Exterior angle theorem. the measure of an exterior angle (our w) of a triangle equals to the sum of the measures of the two remote interior angles (our x and y) of the triangle. let's try two example problems. example a: if the measure of the exterior angle is (3x 10) degrees, and the m...