Perspective is a set of tools artist use to create the illusion of Depth and Space in art. The illusion of 3 dimensional objects on a 2 dimensional surface . 

Linear Perspective

Using lines that Converged at a vanish point on the horizon  to show Size, shape and position of objects in art.

Atmospheric Perspective

Artist tools for creating depth and distance in a Painting By Tone, Hue, and sharpness. Using depth of colors and contrast to push objects to the distance or place them in the foreground. 

ZERO point perspective

A non linear Natural Scene often without parallel lines. Like a mountain range 

Vanish point

the point at which receding parallel lines viewed in perspective appear to converge.

The horizon line

A horizontal line across the picture. It is always at eye level - Where it is shows where we are looking from high or low 

One point perspective  

Art drawing skill where objects are converging to a single Vanishing Point 

two–point perspective.

A linear perspective in which parallel lines along the width and depth of an object are represented as meeting at two separate points on the horizon 

three–point perspective.

linear perspective in which parallel lines along the width of an object meet at two separate points on the horizon and vertical lines on the object meet at a point on the perpendicular bisector of the horizon line.