Answer:

An equilateral triangle is a triangle whose sides are all of equal length. Its angles are all 60°. In geometry, an equilateral triangle is a triangle in which all three sides have equal lengths.

In traditional or Euclidean geometry, equilateral triangles are also equiangular; that is, all three internal angles are also equal to each other and are each 60°. They are regular polygons, and can therefore also be referred to as regular triangles.

An equilateral triangle can be easily constructed using a compass.

Example of an Equilateral Triangle: