Which of the following describes an equilateral triangle? Circle all that apply. A. All angles are the same measure.
B. All sides are the same length.
C. Each angle measures 60°.
D. No sides are the same length.
E. One angle is 90°.

A, B, and C

Step-by-step explanation:

The equilateral triangle refers to its equivalent sides and angles. So automatically, D would be ruled out.

Equilateral triangles have the same angles, so that would rule out E, because one 90° angle means it is a right triangle. Based on the explanation above, the answer would be A and B. C can be confusing but here's the explanation:

A triangle's sum of interior angles is 180°,  so if a triangle has three sides, it also has three angles. So if you divide 180 into 3 equal parts, you get 60° each. So technically C is correct.

Answers: A, B, and C.

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