Answer
Both are $90^{\circ}$, meaning they are both right angles.
Work Step by Step
Based on answer a) and b), both have the same angle of $90^{\circ}$, which is a right angle.
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 1 - Section 1.2 - Angles and Their Relationships - Exercises - Page 49: 43c
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