Parallelopiped used in a sentence

Parallelopiped in a sentence as a noun

As an example, it took me some time to grasp that the determinant is the size of a square matrix, and that a one-dimensional matrix gives the distance, a two dimensional matrix gives the area of a parallelogram, and a three dimensional matrix gives the volume of a parallelopiped. After that it became easier to understand how to get the determinant of an n-dimensional matrix.