Systems of Perspective

Implied orthogonal lines extend from viewer point
of view through the edges of established planes to create the illusion of distance and space, converging to a vanishing point placed on the horizon; dividing the planes into ground and sky.

One Point Perspective:

A single point is placed on the horizon line and all the lines of objects at right angles to the plane angle off toward that point: the object drawn appears parallel with the picture plane.

Two-Point Perspective:

A scene or object viewed from an angle which is not parallel to the picture plane: the edges recede to two divergent points on the horizon line.

Multi-Point Perspective:

An object is angular but also recedes upward or downward in space in relation to the horizon line.