- Allexperts
Geometry Q&A - Volunteer tutors help you work through your geometry
problems for free.
- Bette Veteto's
Homepage - History of Mathematics, very strong on geometry.
- 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.
- Conjectures
Produced by the Program Graffiti - Graffiti is a computer program
that makes conjectures in mathematics and chemistry. Links to the conjectures
and bibliography.
- Cuboid and
Cube Surface Distances - A java applet with substantial analysis
related to distances on a rectangular box.
- 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.
- Encyclopedia
of Triangle Centers - By Clark Kimberling. Over 1000 triangle centres
in a searchable compilation with diagrams.
- The Entropy Reduction Laboratory
by Karl-Dietrich Neubert - Discusses double shell structured periodic
systems, platonic spheres, molecular and crystal structures, and FlashSort
algorithms.
- Erich's Packing
Center - Graphics and links for various packing, tiling and covering
problems.
- Euclid's
Proof of the Pythagorean Theorem- An animated proof of Pythagorean's
Theorem.
- 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.
- Geometry
of the Sphere- Examines the incidence relations between great circles,
the notion of angle on the sphere, and the areas of certain fundamental
regions on the sphere, culminating with the area of spherical triangles.
- A Gallery of
Interactive On-Line Geometry - At the Geometry Center.
- Geometric
Group Theory - Information and resources about geometric group theory
and low-dimensional topology. People, groups, meetings, links.
- Geometry
Activities - By Ephraim Fithian.
- 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 in Action
- Includes collections from various areas in which ideas from discrete
and computational geometry meet real world applications.
- The Geometry
Junkyard - Usenet clippings, web pointers, lecture notes, research
excerpts, papers, abstracts, programs, problems, and other stuff related
to discrete and computational geometry.
- Geometry Page
from Interactive Mathematics Miscellany - Includes articles on topics
in elementary and not so elementary geometry, many with interactive
Java illustrations and multiple proofs.
- The Kepler Conjecture
- Information on the recent proof of Kepler conjecture on sphere packings.
- Math
3210 - Higher Geometry I - Course notes by Bill Cherowitzo.
- 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.
- Mathematical Curves
and Surfaces - Graphical representations of computer generated forms.
(French/English).
- 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'.
- Non-Euclid-
"Offering straightedge and compass constructions in hyperbolic geometry…
for use in high school and undergraduate education."
- Packomania
- Includes packings of equal objects in containers together with source
codes to obtain them numerically.
- Paul Bourke's
Geometry Page - Includes formulas, definitions and three dimensional
image illustrations.
- Problem of the
Minimum Rotation Surface - Java applet demonstrating the catenary.
- Pythagorean
Theorem and its many proofs- 29 independent proofs.
- Steiner
Surfaces - Mathematical descriptions and ray-traced images of various
types of Steiner surfaces
- Tim Lister's Hyperbolic
Geometry - Cabri constructions for the demonstration of the basic
concepts of hyperbolic geometry in the Poincare disc model.
- Vectors-
Examines some of the elementary ideas concerning vectors.
- Virtual
Polyhedra- A collection of thousands of virtual reality polyhedral
for you to explore.
- Wilson
Stothers' Inversive Geometry and CabriJava Pages - Includes Steiner's
Porism and the arbelos.
- 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.
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