Definition of a Parellelepiped

Date: 9/18/95 at 21:48:3
From: Jeffrey H Dresner
Subject: Re: Geometry term

What is a parallelepiped?

Jeffrey H Dresner

Date: 9/18/95 at 22:41:16
From: Doctor Ken
Subject: Re: Geometry term

Hello!

A parallelepiped is kind of like a 3-d (or n-d, really) version of a 
parallelogram.  So here's an analogy: a rectangle is to a parallelogram as
a box (or rectangular prism, or rectangular parallelepiped) is to a 
parallelepiped.  

Note that a rectangle is a parallelogram, but a parallelogram isn't 
necessarily a rectangle.  The same is true of boxes and parallelepipeds.

- Doctor Ken,  The Geometry Forum