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Geometry

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Moderate

Triangle Classification: Angles/Sides/Solving for Variable

GEOM-13ZXPH

The perimeter of $\triangle DEF$ is $72$ units:

$DF=2x+6$
$DE=4x$
$EF=3x+12$

Which of the following classifications apply?

A

Scalene

B

Acute

C

Isosceles and Acute

D

Scalene and Acute

E

Scalene and Right