Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 10 - Geometry - 10.1 Points, Lines, Planes, and Angles - Concept and Vocabulary Check - Page 615: 4

Answer

vertical

Work Step by Step

The opposite angles formed when two lines intersect are equal and are called vertical angles.
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