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Biaugmented pentagonal prism : ウィキペディア英語版 | Biaugmented pentagonal prism
In geometry, the biaugmented pentagonal prism is one of the Johnson solids (''J''53). As the name suggests, it can be constructed by doubly augmenting a pentagonal prism by attaching square pyramids (''J''1) to two of its nonadjacent equatorial faces. (The solid obtained by attaching pyramids to adjacent equatorial faces is not convex, and thus not a Johnson solid.) ==External links==
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