What type of perspective, giving the illusion of depth, is demonstrated by the sketch above? List the steps taken to create this drawing, making sure to include the reason for the line and the points on it, and how they are used to guide the drawing.

Explanation: Another way to consider the condition that the further away objects are the smaller their visual angle, or the smaller their image on your retina is with a perspective illusion. That the lines radiate to some common point in the distance is called perspective.

they most likely have a instrumental version. just look it up on google.