Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 3 - Parallel and Perpendicular Lines - 3-8 Slopes of Parallel and Perpendicular Lines - Practice and Problem-Solving Exercises: 60

Answer

Yes, they are.

Work Step by Step

Angle 1 is congruent to Angle 2. We know this because these two angles are vertical angles, so they satisfy the requirements of the vertical angles theorem.
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