Tetrahedron

Tetrahedron[] represents a regular tetrahedron centered at the origin with unit edge length.

Tetrahedron[l] represents a tetrahedron with edge length l.

Tetrahedron[{θ,ϕ},…] represents a tetrahedron rotated by an angle θ with respect to the z axis and angle ϕ with respect to the y axis.

Tetrahedron[{x,y,z},…] represents a tetrahedron centered at {x,y,z}.

Tetrahedron[{p1,p2,p3,p4}] represents a general filled tetrahedron with corners p1, p2, p3 and p4.

Tetrahedron[{{p1,1,p1,2,p1,3,p1,4},{p2,1,…},…}] represents a collection of tetrahedra.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.