Illustration of an equilateral triangle inscribed in a closed concave geometric figure with 24 sides…

Illustration of an equilateral triangle circumscribed about a circle. This can also be described as…

Illustration of an equilateral triangle inscribed in a circle. This can also be described as a circle…

Illustration showing an equilateral triangle inscribed in a circle.

An illustration showing how to construct an equilateral triangle inscribed in a circle. "With the radius…

Illustration used to prove that triangle EFD is equilateral given that triangle ABC is equilateral and…

Illustration used to construct an equilateral triangle on a given base.

Illustration to show the perpendiculars dropped from any point in the equilateral triangle to the three…