I'm not sure how to do this so I'm just asking for help.

C

Step-by-step explanation:

In ∆DEG, we are given that all the three angles are congruent.

This means that all the three angles have equal measure. Thus,

<D = <E = <F

An equilateral triangle has equal angle measure. ∆DEF is an equilateral triangle.

Since the sum of a triangle is 180°, therefore, each angle in ∆DEF = 60°

m<D = 60°

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857

i just took the test, the correct answer is .. 31.5 in.