Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 11 - Section 11.4 - Applications with Acute Triangles - Exercises - Page 527: 10a

Answer

The sum of the angles in a triangle is 180 degrees.

Work Step by Step

Recall, the sum of the measures of the triangle is 180 degrees. Thus, to find the measure of the missing angle, it is only necessary to subtract the measures of the given angles from 180 degrees. By doing this, you find the third angle.
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