Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 8 - Geometry - 8.1 Basic Geometric Terms - 8.1 Exercises - Page 537: 14


Lines XY and CD are not parallel. They are Perpendicular Lines.

Work Step by Step

Lines XY and CD intersect. Therefore they are not parallel. They intersect to form a right angle. This makes them, by definition, Perpendicular Lines.
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