Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 1 - Section 1.5 - Introduction to Geometric Proof - Exercises - Page 42: 8

Answer

Definition of supplementary angles

Work Step by Step

The definition of supplementary angles can be used to justify the given conclusion.
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