👉 A parallelepiped is a three-dimensional shape that has parallel edges. It can be thought of as a prism with one base square and two triangular sides, where the base is perpendicular to the other two sides. The height of the parallelepiped is equal to its lateral surface area, which is twice the product of its base length and height. Parallelepipedous shapes are often used in architecture, engineering, and design to represent three-dimensional objects that have parallel edges and are symmetrical.