What defines a scalene triangle?

A scalene triangle is defined by having no congruent sides, meaning that all three sides are of different lengths. This characteristic distinguishes scalene triangles from other types of triangles. For example, isosceles triangles have at least two sides that are congruent, while equilateral triangles have all sides equal and all angles equal. By understanding the definition of a scalene triangle, you can recognize its properties in relation to other triangles. The absence of any congruent sides is what primarily sets the scalene triangle apart, making it unique in its structure.