Answer
Acute equilateral triangle
Work Step by Step
$\angle$Y=$\angle$Z
2m$\angle$Z=180-60
m$\angle$Z=60=m$\angle$Y
Since every angle is equal it is an equilateral triangle. Since every angle is less than 90$^{\circ}$ it is an acute triangle.
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
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: 16
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