From Wikipedia, the free encyclopedia
In geometry, an equilateral triangle is a triangle in which aw three sides are equal. In tradeetional or Euclidean geometry, equilateral triangles are an aa equiangular; that is, aw three internal angles are an aa congruent tae ilk ither an are each 60°. Thay are regular polygons, an can tharefore an a be referred tae as regular triangles.
| Equilateral triangle | |
|---|---|
| |
| Teep | Regular polygon |
| Edges an vertices | 3 |
| Schläfli seembol | {3} |
| Coxeter diagram |    |
| Symmetry group | D3 |
| Aurie | |
| Internal angle (degrees) | 60° |
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