Geometry: Common Core (15th Edition)

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

Chapter 2 - Reasoning and Proof - 2-6 Proving Angles Congruent - Practice and Problem-Solving Exercises - Page 126: 23


a) it is given b) $m\angle V$ c)180 d) Division e) right

Work Step by Step

a) This is stated in the problem, so is called "given". b) This is the definition of congruent angles. c) The measures of supplementary angles sum to 180. d) Each side of the equation was divided by 2. e) A right angle is an angle that measures $90^o$.
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