Elementary Geometry for College Students (5th Edition)

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

Chapter 3 - Section 3.5 - Inequalities in a Triangle - Exercises - Page 165: 18

Answer

Acute isosceles triangle.

Work Step by Step

m$\angle$Z=180-70-40=70$^{\circ}$ Two angles have a measure of 70$^{\circ}$ so it is an isosceles triangle. Every angle has a measure less than 90$^{\circ}$ so it is an acute triangle.
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