Do all triangles have angles that add up to 180 July 8, 2019 16 32 64 128 Do all triangles angles add up to 180 Do all triangles angles add up to 180 degrees Do all triangles interior angles add up to 180 In a right triangle one angle measures x° where sin ° = x 4 5 . what is cos(90° − °) x Do all angles of a triangle equal 180
