The law of reflection establishes a definite relationship between the angle of incidence of a light ray striking the boundary between two transparent media and its angle of reflection. Describe this relationship. The law of reflection states that the angle of incidence is always less than the angle of reflection. The law of reflection states that the angle of incidence equals the angle of reflection. The law of reflection states that the angle of incidence is always greater than the angle of reflection. The law of reflection states that the angle of incidence equals the index of refraction.