A gateway to 16,000 articles, multimedia, a new dictionary, and our world atlas. More than a half dozen applications or applets can be accessed from this main page provided by the Geometry Center. WebEq is useful for writing mathematical formulae for web pages. Hyperbolic Triangles demonstrates how the sum of the angles is always less than 180 degrees, and thus always has a finite area.
Iteration is a graphical iteration of a quadratic paramerized curve.
Tetris, the game, involves pattern recognition. Leap Fractal demonstrates the chaos game. IFSoft is comprised of two applets that illustrate ideas about fractals to high school and middle school students and their teachers. Kali is a program that draws symmetrical patterns based on any of 17 wallpaper groups.