## Elementary Geometry for College Students (7th Edition)

Published by Cengage

# Chapter 1 - Section 1.2 - Angles and Their Relationships - Exercises - Page 47: 17

#### Answer

m$\angle$ RST = 42$^{\circ}$

#### Work Step by Step

Using the Segment Addition Postulate: m$\angle$RST + m$\angle$TSV = m$\angle$RSV Substitute in the values from the problem. m$\angle$RST + 17 = 59 Subtract 17 from both sides of the equation m$\angle$RST + 17 - 17= 59 - 17 m$\angle$RST = 42

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