Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 2 - Section 2.1 - The Parallel Postulate and Special Angles - Exercises - Page 74: 7

Answer

Angle 9 appears to be a right angle.

Work Step by Step

When interior angles of traversal on two parallel lines are bisected then the angle where they meet is always a right angle.
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