Fractals
http://math.rice.edu/~lanius/frac/

Geometric Dissections
A geometric dissection is a cutting of one or more figures into pieces that can be rearranged to form other figures.
http://www.cs.purdue.edu/homes/gnf/book/webdiss.html

Geometry Problem of the Week
http://forum.swarthmore.edu/geopow/?

Geometry of the Week(7-12)
http://forum.swarthmore.edu/geopow?

Ptolemy's Ptools
Site contains geometry projects.
http://www.ics.uci.edu/~eppstein/junkyard/topic.html

Suzanne's Mathematics Lessons
http://forum.swarthmore.edu/alejandre/index.html

Ihe Four Color Theorem
A brief summary of the new proof
http://www.math.gatech.edu/~thomas/FC/fourcolor.html

The Four Color Theorem
Summary of a new proof.
http://www.math.gatech.edu/~thomas/FC/fourcolor.html

The Geometry Junk Yard: Topics
http://www.ics.uci.edu/~eppstein/junkyard/topic.html

U-Draw Fractals
Input of random numbers and functions will let you create your own fractals.
http://www.donarcher.com/