Answer
$\triangle DEF $ is an Isosceles
Work Step by Step
In $\triangle DEF, DE= 6, EF = 6, and DF = 8$.
$DE=EF=6$ Two sides of the given triangle are equal
$\triangle DEF $ is an Isosceles
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 96: 7b
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