Equilateral triangle

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Equilateral triangle
Triangle.Equilateral.svg
Type Regular polygon
Edges an vertices 3
Schläfli seembol {3}
Coxeter diagram CDel node 1.pngCDel 3.pngCDel node.png
Symmetry group D3
Aurie \tfrac{\sqrt{3}}{4} a^2
Internal angle (degrees) 60°

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 each ither an are each 60°. Thay are regular polygons, an can tharefore an a be referred tae as regular triangles.