Skalene

Skalene is a term used in geometry to describe a triangle that does not have any equal sides or angles. This means that all three sides and all three angles of a scalene triangle are of different lengths and measures, respectively. The term "scalene" comes from the Greek word "skalenos," which means "uneven" or "irregular." In contrast to equilateral triangles, which have all sides and angles equal, and isosceles triangles, which have two sides and two angles equal, scalene triangles are the most irregular type of triangle. The properties of scalene triangles include the fact that they do not have any lines of symmetry, and their area can be calculated using Heron's formula, which requires knowledge of all three side lengths. Despite their irregularity, scalene triangles are fundamental in various fields of mathematics and engineering, where understanding different types of triangles is crucial.