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 - Review Exercises - Page 131: 1b

Answer

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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