Definitions | tetrahedron |
| noun (pl2=tetrahedra)
- (geometry) a polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.
Translations: - French: tetraèdre
- German: Tetraeder
- Italian: tetraedro
- Spanish: tetraedro
Etymology: From tetra-, "four" + hedron, "seat".
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