The 31 great circles of the Icosahedron is a foundational model in Synergetics and nature's coordinate system.

Sphere packing 12 unit-radius spheres around a nucleus will produce a geometric shape that Buckminster Fuller named the Vector Equilibrium.

This is an image showing the a vertex view of a tetrahedron with three spheres. The smallest Sphere is tagent to the faces of the tetrahedron, the middle sphere is tangent to the edges of the tetrahedron and the Tetrahedrons vertexes correspond to the largest sphere. * THIS GRAPHIC IS IN THE PUBLIC DOMAIN AND CAN BE USED FOR ANY PURPOSE WITHOUT ATTRIBUTION (although it is appreciated) Click Image to Download