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Podaljšana petstrana girobikupola

Podaljšana petstrana girobikupola
Vrsta Johnsonovo telo
J38-J39-J40
Stranske ploskve 10 trikotnikov
2.10 kvadratov
2 petkotnika
Oglišča 30
Robovi 60
Konfiguracija oglišča 20(3.43)
10(3.4.5.4)
Grupa simetrije D5d
Dualni polieder -
Lastnosti konveksna

Slika oglišč

Podaljšana petstrana girobikupola je eno izmed Johnsonovih teles (J39). Kot že ime nakazuje, jo dobimo s podaljšanjem petstrane girokupole (J31) tako, da dodamo desetstrano prizmo med njeni skladni polovici. Z vrtenjem ene izmed petstranih kupol (J5) za 36º preden vstavimo prizmi, dobimo podaljšano petstrano ortobikupolo (J38).

V letu 1966 je Norman Johnson (rojen 1930) imenoval in opisal 92 Johnsonovih teles.

Prostornina in površina

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Naslednja izraza za prostornino (V) in površino (P) sta uporabna za vse stranske ploskve, ki so pravilne in imajo dolžino roba 1 [1]

Opombe in sklici

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Zunanje povezave

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Podaljšana petstrana girobikupola
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