👉 An icositetrahedron is a type of tetrahedron that has one vertex at the center of an equilateral triangle. It can also be defined as a regular tetrahedron with a side length equal to the radius of the circumscribed circle, which is half the diameter of the equilateral triangle. The icositetrahedron is named after the ancient Greek mathematician Eudoxus who described it in his work "Recherches sur les nombres"
