In graphic arts, perspective is the representation of how an image is seen by the eye. It is about how the angle and distance of a three-dimensional object is represented on a flat surface. To create a real scene, objects are drawn smaller to show that they are farther away from the person looking at the artwork. The dimensions of an object are also drawn differently depending where the line of sight is. The size of an object's dimensions along the line of sight are usually drawn shorter than dimensions across the line of sight. This is called foreshortening, and is used to create the appearance of three dimensions on a flat surface.