Geometry

Question Analysis:
This question tests the ability to classify a triangle based on its side lengths.
The main focus is recognizing the properties of an equilateral triangle.

Key Concept Explanation:
A triangle with three equal sides is always an equilateral triangle, which also means all three angles are 60°.

Step-by-Step Solution:
The triangle has three equal sides.
By definition:
Equilateral triangles have three equal sides and three equal angles (60° each).
Checking the answer choices:
(A) Scalene: Incorrect, scalene triangles have no equal sides.
(B) Isosceles: Incorrect, isosceles triangles have only two equal sides.
(C) Equilateral: Correct, three equal sides define an equilateral triangle.
(D) Right: Incorrect, right triangles are class...