Scalene
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A scalene triangle.
The type of triangle whose three sides are all of different length is officially called a scalene triangle.
Scalene
A scalene triangle has all different sides.
A triangle in which one angle is equal to 90o is called a right triangle. A triangle in which all sides are equal (or) all the angles are equal to 60o is called an equilateral triangle. A triangle in which any two sides or any two angles are equal is called an isosceles triangle. A triangle in which all the sides or angles are different is called a scalene triangle.