tetraéder

== Hungarian == === Etymology === From German Tetraeder, from Ancient Greek τετράεδρον (tetráedron, “triangle-based pyramid”), from τετράεδρος (tetráedros), from τετράς (tetrás, “four”) + ἕδρα (hédra, “seat”). === Pronunciation === IPA(key): [ˈtɛtrɒjeːdɛr] Hyphenation: tet‧ra‧éder Rhymes: -ɛr === Noun === tetraéder (plural tetraéderek) (geometry) tetrahedron (a polyhedron composed of four triangular faces, six straight edges, and four vertex corners) ==== Declension ==== === References === === Further reading === tetraéder in Géza Bárczi, László Országh, et al., editors, A magyar nyelv értelmező szótára [The Explanatory Dictionary of the Hungarian Language] (ÉrtSz.), Budapest: Akadémiai Kiadó, 1959–1962. Fifth ed., 1992: →ISBN.