Definition:Triangle (Geometry)/Equilateral

Definition
An equilateral triangle is a triangle in which all three sides are the same length:

That is, a regular polygon with $3$ sides.


 * EquilateralTriangle.png

Thus it can be seen that an equilateral triangle can be considered to be a special case of an isosceles triangle.

Also known as
An equilateral triangle is also less commonly known as an equiangular triangle.