Elementary Geometry for College Students (7th Edition) Clone

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 2 - Section 2.3 - Proving Lines Parallel - Exercises - Page 101: 31

Answer

1. Consider two alternate exterior angles A and B. 2. By the vertical angle theorem, angle B is congruent to angle A's corresponding angle. 3. If corresponding angles are congruent, then the lines are parallel. 4. Thus, if the alternate exterior angles are congruent, then the lines are parallel.
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