立方体(りっぽうたい)

立方体(りっぽうたい) is a mathematical and geometric term for a cube — a solid with six equal square faces. Encountered in 算数(さんすう) (elementary math) and 数学(すうがく) (mathematics).

WORD FORMATION:
立方(りっぽう) (cubic) + 体(たい) (body, solid). The term 立方(りっぽう) itself means "cubic" and appears in units like 立方(りっぽう)メートル (cubic meter).

PROPERTIES:

• 面(めん): 6 (faces)
• 辺(へん): 12 (edges)
• 頂点(ちょうてん): 8 (vertices)

RELATED TERMS:

• 直方体(ちょくほうたい): rectangular prism/cuboid
• 正六面体(せいろくめんたい): regular hexahedron (formal mathematical synonym)
• 球(きゅう): sphere
• 円柱(えんちゅう): cylinder