From any point on a squared grid, trace segments whose extremities link two nodes on the grid. Those segments form the edges of a polygon. The path to follow is given by a serie of couples: number and direction. The number gives you how many points you have to go through and the direction to follow is given by the rose of winds.
|Figure #0 (Example)||4N 3E 1S 2W 1S 1E 1S 1W 1S 1W|
|Figure #1||1N 1E 1S 1E 1S 1W 1S 1W 1N 1W 1N 1E|
1NE 2SE 2NE 1SE 2SW 2SE 1SW 2NW 2SW 1NW 2NE 2NW
It's up to you! Imagine a pattern and write the instructions to draw it.