Equilateral triangle
geometric shape with three sides of equal length / From Wikipedia, the free encyclopedia
In geometry, an equilateral triangle is a triangle where all three sides are the same length and all three angles are also the same and are each 60°. If an altitude is drawn, it bisects the side to which it is drawn, in turn leaving two separate 30-60-90 triangles
![Equilateral triangle](http://upload.wikimedia.org/wikipedia/commons/8/88/Triangolo-Equilatero.png)