Geometry: Common Core (15th Edition)

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

Chapter 5 - Relationships Within Triangles - Chapter Test - Page 345: 6

Answer

Statements I and III contradict each other.

Work Step by Step

If two angles are congruent, they can be vertical angles because vertical angles are congruent to one another. If two angles are congruent, then they cannot be adjacent angles because adjacent angles are supplementary. Adjacent angles can be congruent only if they are right angles. Statements I and III contradict each other.
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