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Geometrian, birrotonda pentagonal giroelongatua Johnsonen solidoetako bat da (J48), birrotonda pentagonal bat (J34 edo ikosidodekaedroa) "giroelongatuz" eraiki daitekeena, erdian antiprisma dekagonal bat txertatuz.
Birrotonda pentagonal giroelongatua | |
---|---|
Taldea | Johnsonen solidoak J47 – J48 – J49 |
Aurpegi kopurua | 40 hiruki 12 pentagono |
Ertz kopurua | 90 |
Erpin kopurua | 40 |
Erpin-konfigurazioa | 2x10(3.5.3.5) 2.10(34.5) |
Simetria-taldea | D5 |
Propietateak | Ganbila, kirala |
Poliedro duala | - |
Garapena |
Johnsonen solidoak 92 dira; eta Norman Johnson-ek izendatu eta deskribatu zituen, 1966an.
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