Geometry: Common Core (15th Edition)

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

Chapter 3 - Parallel and Perpendicular Lines - Get Ready! - Page 137: 2

Answer

$\angle 3$, $\angle4$

Work Step by Step

The measures of complementary angles sum to 90. Adjacent angles whose noncommon sides form a right angle are complementary.
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