平へい行こう六ろく面めん体たい

noun

parallelepiped

Mathematical term for a six-faced polyhedron whose faces are parallelograms. Used in geometry and linear algebra.

• 平へい行こう六ろく面めん体たいの体たい積せきは、三みっつの辺へんベクトルのスカラー三さん重じゅう積せきで求もとめられる。

  The volume of a parallelepiped is given by the scalar triple product of its three edge vectors.