Did you know that some things may seem distant - as if they disappear - when you look at a flat surface? This is an illusion called the vanishing point. It's not magic ... it's mathematical! The pedagogical side: This segment explores a technique used by artists: the forced perspective. Perspective is the art of putting depth in a drawing to illustrate the distance between certain objects and the observer. This gives the impression of a three-dimensional space and an accurate representation.