as this image shows, vertual images are made of multiple polygons, where each point meets is called a vertice, the line between the verticaes is called the edge, an N-gon is a polygon consisting of more than four sides.
multiple polygons can be joined into a mesh, bent/moulded into an abject of choice. Depending on the system memory, any object can be created as long as it is within the polygon limit.
jpinnington 