Equilateral triangle - Wikipedia

File:Equilateral triangle reptiles.gif - Wikipedia

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File:Equilateral triangle.PNG - Wikipedia

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File:Equilateral triangle.svg - Wikipedia

File:Rectangle that bounds equilateral triangle.png - Wikipedia

File:Equilateral triangle with circumscribed rectangle and square.png - Wikipedia

File:Equilateral triangle with medians.svg - Wikipedia

File:Equilateral triangle with side 2.svg - Wikipedia

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Equilateral triangle - Wikipedia

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File:Construire un triangle equilateral.svg - Wikipedia

What does an equilateral triangle look like?

geometry - Remarkable property of equilateral triangles - Mathematics Stack Exchange