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

Published by Cengage

# Chapter 5 - Section 5.1 - Ratios, Rates, and Proportions - Exercises - Page 229: 35

#### Answer

The angle has a measure of 45$^{\circ}$

#### Work Step by Step

$\frac{90-a}{180-a}$=$\frac{1}{3}$ 270-3a=180-a 2a=90 a=45$^{\circ}$

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