In the graphic arts, such as drawing, perspective is an approximate representation, on a flat surface, (such as paper or computer monitor), of an image as it is seen by the eye. The two most characteristic features of perspective are that objects are drawn: 1) smaller as their distance from the observer increase, 2) foreshortened—the size of an object’s dimensions along the line of sight are relatively shorter than dimensions across the line of sight. There are eight common types of depth perspective, covered individually in this glossary.