The sum of angles of a triangle is 180 prove it July 8, 2019 16 32 64 128 The sum of all angles of a triangle is 180 prove it 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 Find the measure of the indicated angle The sum of the measures of the angles of a triangle is 180
