Answer the following question in 3-4 complete sentences. A horizontal line drawn in the center of a paper. A line drawing of 2 intersecting roads and 3 buildings in the corner is placed on top of the horizontal line. Diagonal dotted lines drawn down from the top of the buildings connect to points on the horizontal line, showing 2 vanishing points. Diagonal dotted lines drawn up from roads connect to the points on the horizontal line.
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.