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: 16


$\angle$BOD or $\angle$DOB. The Vertex is O.

Work Step by Step

Lines AB and CD share the point O. This creates the rays OA, OB, OC, and OD. A point shared by two or more rays is the vertex. When naming a vertex the point should always be in the middle of the angle name.
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