- The Sierpiński triangle, also called the Sierpiński gasket or Sierpiński sieve, is a fractal with the overall shape of an equilateral triangle, subdivided recursively into smaller equilateral triangles. Originally constructed as a curve, this is one of the basic examples of self-similar sets—that is, it is a mathematically generated pattern that is reproducible at any magnification or reduction. It is named after the Polish mathematician Wacław Sierpiński, but appeared as a decorative pattern many centuries before the work of Sierpiński.
- Star Lake (Washington) (Wikipedia)
Star Lake is located in southern King County, Washington in the Lakeland North census-designated place. It is one of two large lakes in Lakeland North, alongside Lake Dolloff. Interstate 5 runs just to the west of the lake.