Geometry: Common Core (15th Edition)

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

Chapter 2 - Reasoning and Proof - Chapter Review - Page 132: 34

Answer

y=18

Work Step by Step

Use the vertical angle theorem to write an equation and solve for y. $3y+20=5y-16\longrightarrow$ vertical angles have the same measure $3y+36=5y\longrightarrow$ addition property of equality $36=2y\longrightarrow$ subtraction property of equality $18=y\longrightarrow$ division property of equality
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