The following diagram shows a pyramid with vertex V and rectangular base OABC. Point B has coordinates $(6, 8, 0)$, point C has coordinates $(6, 0, 0)$ and point V has coordinates $(3, 4, 9)$.
The following diagram shows a pyramid with vertex V and rectangular base OABC. Point B has coordinates $(6, 8, 0)$, point C has coordinates $(6, 0, 0)$ and point V has coordinates $(3, 4, 9)$.