Answer
Right triangle
Work Step by Step
If the sum of the measures of two angles of a triangle is equal to the measure of the third triangle then it is a right 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 2 - Section 2.4 - The Angles of a Triangle - Exercises - Page 98: 32
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