Look at a GSP construction
of this famous fractal.
To construct using GSP:
1. Construct an equilateral triangle.
2. Trisect each side of the triangle, and remove the middle section.
3. Replace the middle section with two segments the same length as the one you removed. This part should look like a triangle without the base.
4. Repeat this for the other two sides of the equilateral triangle.
5. The more iterations you perform the smoother the snowflake will appear.