The National Library of Virtual Manipulatives
Learn about the inner workings of isosceles triangles, what makes trapezoids tick, and why shapes are so special.
Homework Help - Geometry
Number Patterns Fun with Curves & Topology
Symmetry and Tessellations
An Exploration of the Concurrency Points in a Triangle
Conjectures in Geometry:
An educational web site created for high school geometry students. Their list of 20 conjectures in Geometry is supported by demonstrations using the Geometers Sketchpad.
Exploring Fractals: A complete fractal project
Fractals- a list of links from Math Archives
The Geometry Center offers activities in the following areas: Triangle Tilings and Polyhedra, Symmetry and Tiling andTetrahedral Puzzles.
Geometry from the Land of the Incas - Problems, theorems, proofs, quizzes and more
Geometry Help - a variety of help topics are available
Illuminations Web Links: Geometry - organized by standard
Java Sketchpad - Dynamic Geometry for the Internet. Check out their demo gallery, the sine waver is a really cool demo of the construction of a sine wave.
Erich's Packing Center has a wealth of visual information
regarding the packing of shapes within shapes.
Polygon Playground- arrange designs with online movable polygons - hundreds of polygons to drag anywhere you want.
Tutorials and templates for making your own tessellations - This lesson plan includes material relating tessellations to mathematics.