Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 2 - Review Exercises - Page 117: 1b


Lines BC and AD are parallel as well as lines AB and CD.

Work Step by Step

If angle 1 and angle 2 are congruent, that makes them alternate interior angles for both of these pairs of parallel lines.
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