Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 2 - Reasoning and Proof - 2-6 Proving Angles Congruent - Practice and Problem-Solving Exercises: 20

Answer

$\angle AOD\cong\angle BOC$ $\angle AOB\cong\angle DOC$

Work Step by Step

The Vertical Angle Theorem tells us these pairs are congruent.
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