Elementary Geometry for College Students (7th Edition)

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

Chapter 2 - Review Exercises - Page 131: 11

Answer

AB and DE are parallel as well as AE and BF.

Work Step by Step

Angles 3 and 5 are alternate interior angles in relation to lines AB and DE. Since they are congruent, this means that AB and DE are parallel. Angles 5 and * are corresponding angles in relation to lines AE and BF. Since they are congruent, this means that AE and BF are parallel.
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