Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 8 - Geometry - 8.1 Basic Geometric Terms - 8.1 Exercises - Page 539: 9

Answer

Yes, the two lines are perpendicular.

Work Step by Step

Two lines are perpendicular if they intersect to form a right angle. Lines AB and CD form a right angle where they intersect. Therefore, they are perpendicular lines.
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