tetraeedril
Tetraeedril is a term that appears only sporadically in informal discussions of geometry and world-building, and it is not a standard name for any particular polyhedron in formal mathematical literature. The word seems to derive from combining the prefix tetra-, meaning four, with a suffix echoing -hedron, the common ending for polyhedral names, but there is no universal definition associated with it.
In the few sources that use the term, tetraeedril is sometimes described as a four-faced polyhedron with
As a consequence, there is no canonical set of properties that define a tetraeedril. In practice, readers
Related topics include tetrahedron, disphenoid tetrahedron (a four-faced tetrahedron with congruent faces), and the general study