At this site you can find activities, definitions and diagrams of geometry conjectures.
Directions to build an Icosahedron as well as links to information about Polyhedra.
Lanius' Lessons - Geometry Online
Great activities for the Geometry student.
of Interactive Geometry
More amazing activities for the person who wants to learn interactively.
- Advanced Math
A great guide to Geometry from definitions to diagrams.
Formulas and Facts
Use documents from a CRC Standard Mathematical Tables and Formulas to understand
A list of some great and some bad geometry jokes. : )
Junkyard - Polyhedra and Polytopes
Presents pointers on geometric properties of polygons, polyhedra, and higher dimensional
Problem of the Week
Solve a geometry problem of the week or peruse an archive of past questions.
Connect to links describing the history of geometry.
Learn the basics of geometry through informative text and diagrams.
A great list of Geometry links on the web.
The Geometry Center has a unified
mathematics computing environment supporting math and computer science research,
mathematical visualization, software development, application development, video
animation production, and K-16 math education.