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 (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 2 - Section 2.4 - The Angles of a Triangle - Exercises - Page 105: 7b
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