plane

In art, an imaginary surface for determining points in a drawing. The illusion of three-dimensional objects on a two dimensional surface can be created by using linear perspective. Firstly, a horizon line is established, with a vanishing point. All other lines parallel to the viewer recede, converge, and disappear at this vanishing point. These receding lines give the artist potential planes that are always in perspective. If the principles of linear perspective are followed, all horizontal and vertical lines will be parallel to one another, ensuring the planes or surfaces created within the work are not distorted.