Prove the exterior angle sum of a quadrilateral is 360 July 8, 2019 16 32 64 128 Prove that in a quadrilateral the sum of all the exterior angle is 360 The angle sum of a quadrilateral In a right triangle one angle measures x° where sin ° = x 4 5 . what is cos(90° − °) x Find the measure of the indicated angle to the nearest degree Angle sum of polygons
