## Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole

# Chapter 2 - Section 2.4 - The Angles of a Triangle - Exercises - Page 97: 10a

#### Answer

$\triangle XYZ$ is obtuse.

#### Work Step by Step

In given $\triangle XYZ$ m$\angle X=123^{\circ}$ One obtuse angle is given. $\triangle XYZ$ is obtuse.

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