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へいこうろくめんたい 平行六面体
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Noun
1. parallelepiped​Mathematics
Wikipedia definition
2. Parallelepiped​In geometry, a parallelepiped is a three-dimensional figure formed by six parallelograms. (The term rhomboid is also sometimes used with this meaning. ) By analogy, it relates to a parallelogram just as a cube relates to a square. In Euclidean geometry, its definition encompasses all four concepts (i.e. , parallelepiped, parallelogram, cube, and square). In this context of affine geometry, in which angles are not differentiated, its definition admits only parallelograms and parallelepipeds.
Read “Parallelepiped” on English Wikipedia
Read “平行六面体” on Japanese Wikipedia
Read “Parallelepiped” on DBpedia

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