Geometry: Common Core (15th Edition)

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

Chapter 2 - Reasoning and Proof - Chapter Test - Page 133: 11

Answer

The statement is not a good definition because it is not reversible.

Work Step by Step

The reverse is: Angles that are congruent are vertical angles. While it is true that vertical angles are congruent, there are other congruent angles that are not vertical angles. Bisecting an angle creates two congruent angles that are not vertical angles.
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