Thought this was interesting
Imagine you have a little robot that holds a pencil. Set it down on a sheet of paper and give it these instructions:
1. Move forward 3 units and turn right.
2. Move forward 1 unit and turn right.
3. Move forward 2 units and turn left.
4. Move forward 1 unit and turn left.
s. Move forward 2 units and turn right.
If the robot makes its turns at ' angles, it will produce this figure:
But, remarkably, if it turns at 12:)" it will draw this: