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Bikupola (geometrija)

Množica bikupol
Triangular gyrobicupola
Stranske ploskve 2n trikotnikov,
2n kvadratov
2 n-kotnika
Robovi 8n
Oglišča 4n
Simetrijska grupa orto: Dnh, [2,n], *n22, reda 4n
giro: Dnd, [2+,2n], 2*n, reda 4n
Vrtilna grupa Dn, [2,n]+, n22, reda 2n
Lastnosti konveksna
Girobifastigij (J26) lahko obravnavamo kot digonalno girobikupolo.

Bikupola je v geometriji telo, ki je sestavljeno iz dveh kupol zlepljenih zlepljeni v svojih osnovnih ploskvah.

Znani sta dve skupini bikupol. Vsaka skupina je omejena z izmenjujočimi se trikotniki in kvadrati.

Oblike

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Množica ortobikupol

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Simetrija Slika Opis
D3h
[2,3]
*223
tristrana ortobikupola (J27): 8 trikotnikov, 6 kvadratov, njeno dualno telo je trapezorombski dodekaeder
D4h
[2,4]
*224
kvadratna ortobikupola (J28): 8 trikotnikov, 10 kvadratov
D5h
[2,5]
*225
petstrana ortobikupola (J30): 10 trikotnikov, 10 kvadratov, 2 petkotnika
Dnh
[2,n]
*22n
k-strana ortobikupola: 2n trikotnikov, 2n kvadratov, 2 n-kotnikov

Množica girobikupol

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Simetrija Slika Opis
D2d
[2+,4]
2*2
girobifastigij (J26): 4 trikotniki, 4 kvadrati
D3d
[2+,6]
2*3
tristrana girobikupola ali kubooktaeder: 8 trikotnikov, 6 kvadratov; je dualen rombskemu dodekaedru
D4d
[2+,8]
2*4
kvadratna girobikupola (J29): 8 trikotnikov, 10 kvadratov
D5d
[2+,10]
2*5
petstrana girobikupola (J31): 10 trikotnikov, 10 kvadratov, 2 petkotnika
Dnd
[2+,2n]
2*n
k-strana girobikupola: 2n trikotnikov, 2n kvadratov, 2 n-kotnikov

Zunanje povezave

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Bikupola (geometrija)
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