Equilateral triangle

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Equilateral triangle

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

Other websites[change | edit source]

  • MathWorld - the construction of an equilateral triangle