<Arrow> keys, <a> and <z> to rotate the tetrahedron-studded icosahedron in all directions. (You can press 2 or 3 keys at once) Mobile: Hold "mouse" down near edges of screen, or near corners of screen for multiple axis rotation. This "Tetrahedron-Studded Icosahedron" is made by covering each triangle face of an icosahedron with a tetrahedron. The name "Tetrahedron-Studded Icosahedron" is made up by me. It is not a recognized name for this polyhedron. I am unsure if it corresponds to one of the stellations of the icosahedron. https://en.wikipedia.org/wiki/Regular_icosahedron
