noun, noun which may take the genitive case particle 'no'
hexahedron
A solid figure with six faces; in geometry, a cube is a regular hexahedron. Used as a noun or with の to modify another noun.
立方体は正六面体の一種です。
A cube is a type of regular hexahedron.
六面体の頂
Please calculate the number of vertices of the hexahedron.
四面体 means 'tetrahedron', a solid with four faces.
Compound of 六 (ろく, 'six'), 面 (めん, 'face'), and 体 (たい, 'body'). A straightforward kanji-based term for a six-faced solid.