This document discusses parallel and perpendicular lines and provides instructions for drawing them. It defines parallel lines as lines that never intersect and are always the same distance apart. Perpendicular lines intersect at right angles. The document describes 45 and 60 degree set square rulers used to draw parallel and perpendicular lines and provides examples of artists who have used these techniques, including Piet Mondrian, Eusebio Sempere, and Victor Vasarely. Steps are outlined to have students connect dots on paper with rulers to make triangles and then draw parallel lines along the triangles using set square rulers and color pens.