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.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
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 - Page 204: 60
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