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Home > CCG > Chapter 7 > Lesson 7.2.2 > Problem 7-67

7-67.

A light directed from point is pointed at a hinged mirror with right angle as shown below. Homework Help ✎

diagram

  1. If measures , find the measures of , , , , and .

    When the light hits the mirror the angle of incidence and angle of reflection are congruent. Therefore 

    , , ,

  2. Why must the arrows at points and be parallel?

    Use the angle measurements found to explain why the arrows at points and must be parallel.