“Bille” is the first-ever monostable tetrahedron, or a pyramid-like shape with four triangular faces that has one stable ...

A team of researchers has successfully built a strange four-faced pyramid named Bille that always lands on the same face—no ...

Even so, part of their tetrahedron would have to be about 5,000 times as dense as the rest of it. And the materials had to be stiff — light, flimsy materials that could bend would ruin the project, ...

This space-age “Tetrahedron Superyacht” concept combines the aesthetics of a stealth bomber, the Death Star, and an Egypyian pyramid with a revolutionary hydrofoiling propulsion system.

The form of the yacht is reduced to the absolute geometry of a Tetrahedron. A three-based pyramid consisting of 4 faces and 6 leading edges provides fundamental stability and enclosure.

A tetrahedron has no right angles. So, a tetrahedral structure jars us out of spatial complacency. It has so few faces, its aspect changes abruptly as you move around to view it from different angles.