Tessellation Artist
Mathematics and Art come together!
Instructions
First  just play with it! Try the different tools and see what happens.
Tiling Directions
You can control the spacing of the tiles by altering the two tiling directions.
Try tiling in one direction only:
Now tile in two directions:
Now try differemt numbers, pressing "ReTile" after each change to see the effect. If you need to make the pattern exact, you may have to do some calculations first!
Polygons
You can draw regular polygons using the polygon tool. Choose the number of sides, from 3 (Triangles) to 20 (Icosagons). You may also need to adjust the angle to get the desired effect.


Octagons, Angle=0 
Octagons, Angle=22.5 
Nudge and Undo
After adding a shape, you can "Nudge" it into place, or adjust its size. This only works on the shape you just added. You can also use "Undo" to remove the last shape.
What Can You Make?
You can make all kinds of interesting patterns! Have a look at the Tessellation page  there are lots of examples of tiling patterns that were made using tessellation artist (some color was added using a simple paint program).
