The sum of angles in a triangle is how many degrees July 8, 2019 16 32 64 128 The sum of two angles in a triangle is 136 how many degrees is the third angle In a right triangle one angle measures x° where sin ° = x 4 5 . what is cos(90° − °) x The sum of the angles of a triangle is 180 Find the measure of the indicated angle Geometry unit 4