# Chapter 2 - Section 2.4 - The Angles of a Triangle - Exercises - Page 105: 7b

$\triangle DEF$ 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

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