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Home > CCG > Chapter 3 > Lesson 3.2.5 > Problem 3-102


A laser light is pointed at a mirror as shown at right. If measures , what are the measures of and ? Justify your reasons.

The angle of incidence is equal to the angle of reflection.

and are vertical angles.

A light source, A, hits a mirror at an angle x between the mirror and the source. It refracts at an angle, z. between the mirror and the line of refraction B prime. The light source line extends behind the mirror to a point B. The angle opposite, x, between the mirror and B is, y.