Scalene triangle

A scalene triangle is a triangle in which all three sides are different in lengths, and no interior angles are equal.

Triangles categorized by their sides

Triangles are often categorized by either their sides or angles. A scalene triangle is one of three triangles classified by their sides.

TypeSidesFigure
Scalene no sides are equal in length
Isosceles 2 sides are equal in length
Equilateral all sides are equal in length

Triangles are also often categorized as obtuse, acute, or right triangles based on their angles. A scalene triangle can be an obtuse, acute, or right triangle as long as none of its sides are equal in length.