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・ Elongated pentagonal orthobicupola
・ Elongated pentagonal orthobirotunda
・ Elongated pentagonal orthocupolarotunda
・ Elongated pentagonal pyramid
・ Elongated pentagonal rotunda
・ Elongated pyramid
・ Elongated shrew
・ Elongated square bipyramid
・ Elongated square cupola
・ Elongated square gyrobicupola
・ Elongated square pyramid
・ Elongated stitch
・ Elongated tortoise
・ Elongated triangular bipyramid
・ Elongated triangular cupola
Elongated triangular gyrobicupola
・ Elongated triangular orthobicupola
・ Elongated triangular pyramid
・ Elongated triangular tiling
・ Elongatedness
・ Elongation
・ Elongation (astronomy)
・ Elongation factor
・ Elongation factor 2 kinase
・ Elongation factor P
・ Elongatocontoderus fuscofasciatus
・ Elongatoolithus
・ Elongatopothyne basirufipennis
・ Elongator complex protein 5
・ Elongatoserixia flavosuturalis


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Elongated triangular gyrobicupola : ウィキペディア英語版
Elongated triangular gyrobicupola

In geometry, the elongated triangular gyrobicupola is one of the Johnson solids (''J''36). As the name suggests, it can be constructed by elongating a "triangular gyrobicupola," or cuboctahedron, by inserting a hexagonal prism between its two halves, which are congruent triangular cupolae (''J''3). Rotating one of the cupolae through 60 degrees before the elongation yields the triangular orthobicupola (''J''35).
==Formulae==
The following formulae for volume and surface area can be used if all faces are regular, with edge length ''a'':〔Stephen Wolfram, "(Elongated triangular gyrobicupola )" from Wolfram Alpha. Retrieved July 25, 2010.〕
V=(\frac+\frac)a^3\approx4.9551...a^3
A=2(6+\sqrt)a^2\approx15.4641...a^2

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