0kelseymhBest Answer 10 years ago ReplyUpvote You'll need a sheet of paper in addition to the ruler and pencil.Sharpen the pencil. The flat end of a brand new pencil doesn't make lines.Place the ruler on the sheet of paper.Place the sharpend point of the pencil down on the paper, lightly pressing against the edge of the ruler.Pull the pencil along the ruler for some distance, preferably shorter than the size of the paper. Now you've drawn a line! Congratulations!Move the ruler so that it is touching one end of the line you just drew.Place the pencil at that end of the line, and repeat the process above.Now you've drawn an angle! We're really getting somewhere here.Move the ruler again, so that it is touching the separate ends of the two lines you've drawn so far.Place the pencil against the ruler at one of those line-ends, and repeat the process above, stopping when you reach the second line end.Now you've drawn a triangle, the simplest polygon! With enough triangles (and some crayons) you can do computer-generated animation. Enjoy your new career as an artist!