This document discusses linear perspective techniques used during the Renaissance to create the illusion of three-dimensional space on a two-dimensional surface. It explains that Renaissance artists developed mathematical and observational methods like establishing a horizon line and single or double vanishing points. Lines converging on the vanishing point make distant objects appear smaller to trick the eye into seeing depth. The document provides instructions for creating a basic two-point perspective drawing and encourages practicing the technique to build fantasy cityscapes using boxes, buildings, and other forms.