Geometry: Common Core (15th Edition)

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

Chapter 2 - Reasoning and Proof - 2-5 Reasoning in Algebra and Geometry - Practice and Problem-Solving Exercises - Page 117: 7


a) Definition of supplementary b) Substitution Property c) Distributive Property d) Subtraction Property of Equality e) Division Property of Equality

Work Step by Step

a) Supplementary angles are angles whose measures sum to 180. b) The Substitution Property allows us to replace a term with another term that is equal to the term. c) The Distributive Property allows us to combine like terms by adding the coefficients of a variable. d) 20 was subtracted from each side. e) Each side was divided by 4.
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