Answer
Obtuse isosceles triangle
Work Step by Step
m$\angle$Z=180-40-40
m$\angle$Z=100$^{\circ}$
$\angle$Z is obtuse so it is an obtuse triangle. Two angles have equal measure so it is an isosceles 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: 17
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