angle of incidence, Angle between an incoming light ray and the normal., angle of reflection, The angle between the normal and the ray of light leaving a mirror., incident ray, ray of light going towards the mirror or other object., normal, An imaginary line at right angles to the surface of a mirror other object where a ray of light hits it., plane mirror, A smooth, flat mirror., ray diagram, A diagram showing the passage of light rays., reflected ray, A ray of light bouncing off a mirror., scatter, Spread out in all directions..

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