Consider the vertex matrix T in application 1 page 185. How can we extend this into 3 dimensional objects in space? Add a vector, or vectors to T and describe the object for which you have created vertices (i.e., a cube, a pyramid, etc.) What are the dimensions of your new matrix? What do the dimensions represent?

For example, to generate a triangle with vertices (0,0).(1. I). and (l,-1), we store the pairs as columns of a matrix: 0 1 0