In geometry, an equilateral triangle is a triangle in which all three sides are equal, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°.In geometry, an equilateral triangle is a triangle in which all three sides are equal. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°.
