Allexperts Geometry Q&A Volunteer tutors help you work through your geometry problems for free.
Archimedes' Book of Lemmas A collection of all 15 propositions from Archimedes' Book of Lemmas with complete proofs, each accompanied by a Java illustration.
Bob's Pages A collection of interactive geometry applets. Topics include polyhedra, Poncelet's porism, Soddy's hexlet, Mandelbrot set, Steiner porism, Pappus's chain, Repulsion polyhedra and stereo pictures.
Center of Points in 2- or Higher-dimensional Space It provides important formulations for finding a center of points in 2 or higher dimensional space. It can be used in drawing delauney triagulation and voronoi diagram in two or higher dimensions. It also describes how many points are required in defining a center in n-dimensional space.
Diamond Theory Plato tells how Socrates helped Meno's slave boy "remember" the geometry of a diamond. Twenty-four centuries later, this geometry has a new theorem.
Erich's Packing Center Graphics and links for various packing, tiling and covering problems.
Fundamentals of Geometry Free online book on geometry in pdf format. Contains material not easily found elsewhere from detailed exposition of elementary absolute geometry based on Hilbert's axioms to more advanced topics.
Geometric Group Theory Information and resources about geometric group theory and low-dimensional topology. People, groups, meetings, links.
Geometry and the Imagination in Minneapolis Geometry exercises for a two-week summer workshop led by John Conway, Peter Doyle, Jane Gilman and Bill Thurston at the Geometry Center in Minneapolis, June 1991.
Geometry Center Web site for the (now closed) Center for the Computation and Visualization of Geometric Structures at the University of Minnesota. Graphics, multimedia, software, teaching resources.
Geometry Formulas and Facts Excerpts from the 30th Edition of the CRC Standard Mathematical Tables and Formulas (1995), namely, the geometry section minus differential geometry.
Geometry from the Land of the Incas Presents problems involving circles and triangles, with proofs, SAT practice quizzes and famous quotes. Also, has examples of geometry in Peruvian culture.
Geometry from the Land of the Incas Presents problems involving circles and triangles, with proofs, SAT practice quizzes and famous quotes. Also, has examples of geometry in Peruvian culture.
Geometry in Action Includes collections from various areas in which ideas from discrete and computational geometry meet real world applications.
GLaD Comments A new type of geometric construction that was discovered by Dan Litchfield and David Goldenheim. Includes general explanation and sketch examples.
Math Forum: Geometry POW/POM Search Search the Geometry Problem of the Week's archive of creative, non-routine challenges, as well as submissions and commentary, dating back to 1993.
Math Forum: geometry-research Geometry professors and instructors may keep informed of the latest research conducted in their field at the geometry-research discussion list.
Math Forum: Search geometry-forum Those interested in examining the previous incarnation of the Math Forum may search the archives of the Geometry Forum.
Morley's Miracle A discussion of Morley's famous theorem and the research of which it was a tiny part. 5 proofs are given including J. Conway's, D. Newman's, and A. Connes'.
NPR : Mathematicians Get Crafty with Geometry A husband and wife from Cornell University have come up with a crafty way to illustrate high-level geometry concepts -- by manipulating yarn into models that help explain the curvature of spaces. The mathemeticians talk with NPR's Jacki Lyden about hyperbolic crocheting. [4:47 streaming audio broadcast]
Packomania Includes packings of equal objects in containers together with source codes to obtain them numerically.
Steiner Surfaces Mathematical descriptions and ray-traced images of various types of Steiner surfaces
Teen Math Whizzes Go Euclid One Better Features a discussion about the works of two teenagers, David Goldenheim and Daniel Litchfieldm, from Connecticut. They helped find a solution that eluded Euclid in finding a method to partition a line into any number of equal sections.
The Complete Quadrilateral Several properties of the complete quadrilateral illustrated with Java applets
The Geometry Junkyard Usenet clippings, web pointers, lecture notes, research excerpts, papers, abstracts, programs, problems, and other stuff related to discrete and computational geometry.
The Kepler Conjecture Information on the recent proof of Kepler conjecture on sphere packings.
Xah's Personal Page Features an illustrated dictionary of special plane curves, a paper on wallpaper groups, mathematics image gallery and links to software packages.
