What is the term for a triangle where no sides are equal?

A triangle where no sides are equal is known as a scalene triangle. This term emphasizes that all three sides are of different lengths, which directly defines the nature of the triangle. In a scalene triangle, the angles are also different, further reinforcing the uniqueness of each side. This distinguishes it from other triangle classifications, such as an isosceles triangle, where at least two sides are equal, or an equilateral triangle, where all three sides are of equal length. A right triangle specifically refers to a triangle with one 90-degree angle and does not inherently concern the lengths of the sides. This understanding of a scalene triangle helps clarify the criteria for different triangle types based on side lengths.