The octahedron (O) and the tetrahedron (T1) share a ridge, and the octahedron (O) and the tetrahedron (T2) share a vertex.
When assembled, the elements of the puzzle form a tetrahedron.
A complex mathematical problem is present logically in the tetrahedron solid (32).
The unit is substantially a truncated tetrahedron, with each of the four corners truncated and sealed.
The aircraft (101) of the invention includes a support structure including a plurality of supports, where the supports form a tetrahedron that affixes to the wing (103).
In this aspect, the invention allows one to move between adjacent tetrahedra, and any data corresponding to the tetrahedra, in constant time.
The base (26) of each pyramid (24) of the skin (16) is disposed on, and is congruent with, a respective face (18) of the core (14), with a respective pyramid extending outwardly therefrom.
The mesoporous silicoaluminates contain only tetrahedral aluminum as the residual aluminum.
A curved, tetrahelix bicycle crank arm composed of a helical array of tetrahedra is disclosed.
The structure of the tetrahedral interconnect is isomorphic with a diamond lattice structure.