Antiprisma heptagonal
| Antiprisma heptagonala | |
|---|---|
| |
| Taldea | Poliedro prismatiko erregularrak |
| Aurpegi kopurua | 2 heptagono + 14 hiruki |
| Ertz kopurua | 28 |
| Erpin kopurua | 14 |
| Aurpegiak | heptagonoak eta hirukiak |
| Erpin-konfigurazioa | 3.3.3.7 |
| Simetria-taldea | D7d |
| Schläfli sinboloa | s{2,7} |
| Propietateak | Erdierregularra, ganbila |
| Poliedro duala | Trapezoedro heptagonala |
 Garapena (gainazala) | |
Geometrian, antiprisma heptagonala oinarritzat bi heptagono (berdinak, baina bata bestearekiko biraturik) eta albo-aurpegitzat triangeluak dituen poliedroa da. Oinarri baten erpin bat haren parean beste oinarrian dauden ondoz ondoko bi erpinak lotzean sortzen dira albo-aurpegi triangeluarrak. Adibidez, bi oinarriak hexagonoak dituen prisma batean (bi oinarriek zentro bera dute, baina bata bestearekiko π/7 radian biratuta dago), bi oinarrien hamalau erpinak lotzen dituzten hogeita zortzi ertz daude eta irudiak, beraz, hamalau albo-alde triangeluar ditu: antiprisma heptagonal simetriko bat da[1].
Ikus gainera
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Erreferentziak eta oharrak
- ↑ Elhuyar Zientzia eta Teknologiaren Hiztegi Entziklopedikoa. Antiprisma. .
Kanpo estekak
- (Ingelesez) Weisstein, Eric W.: "Antiprisma heptagonal" MathWorld-en.
| Autoritate kontrola |
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Datuak: Q5732017
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