Bikono
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/12/Bicone.svg/150px-Bicone.svg.png)
Geometrian, bikonoa biraketa-gainazal bat da, erronbo bat bere simetria ardatzaren inguruan biratzean sortzen dena. Edo, bestela, bi kono zuzenak oinarritik lotuz ere lor daiteke.
Bikonoa poliedrotzat ere har daiteke, bipiramide baten poligonoaren alde kopurua infiniturantz jotzen duenean:
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Kanpo estekak
Datuak: Q4903716
Multimedia: Bicones / Q4903716