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.
http://www.geom.umn.edu/
The Geometry Forum:
An electronic community focused on geometry and math education based
at Swarthmore college.
http://freeabel.geom.umn.edu/docs/forum/
Geometry in Action:
This page collects various areas in which ideas from discrete and
computational geometry meet some real world applications.
http://www.ics.uci.edu/~eppstein/geom.html
The Geometry Junkyard:
clippings, web pointers, lecture notes, research excerpts,
papers, abstracts, programs, problems, and other stuff related to
discrete and computational geometry.
http://www.ics.uci.edu/~eppstein/junkyard/
Erich's Packing Center:
Graphics and links for various packing, tiling and covering
problems.
http://www.stetson.edu/~efriedma/packing.html
Fibonacci Numbers and the Golden Section:
This is the Home page for the Fibonacci numbers, the Golden section
and the Golden string. Department of Computing School of Electronic
Engineering, IT and Mathematics, University of Surrey, UK.
http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fib.html
Tim Lister's Hyperbolic Geometry:
Cabri constructions for the demonstration of the basic concepts of
hyperbolic geometry in the Poincare disc model.
http://mcs.open.ac.uk/tcl2/nonE/nonE.html
Mathematical Surfaces:
A collection of parametric and implicit equations.
http://www.uib.no/People/nfytn/mathgal.htm
The Educational Validity of Visual Geometry:
Ph.D. thesis of Marius Blok (Hull, UK, 1998). 'Educational Geometry'
is based on visual geometry, linked to philosophy and visual art and
the learning is free of the application of formulae or the use of
computations.
http://www.rendo.dekooi.nl/~som/
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.
http://members.ozemail.com.au/~llan/
Wilson Stothers' Inversive Geometry and CabriJava Pages:
A page on inversive geometry with CabriJava illustrations. Includes
Steiner's Porism and the arbelos.
http://www.maths.gla.ac.uk/~wilson/cabripages/inversive/inversive0.html
Colin and Greg's Golden Ratio Page:
This is an informative site on an interesting aspect of Geometry:
The Golden Ratio.
http://members.tripod.com/~ColinCool/mathindex.html
Geometry in a Triangle:
A lot of classic constructions in the triangle. And more
non-classic. Free. Applet and programs for Windows, Mac OS9 and Mac
OSX.
http://perso.wanadoo.fr/chavaignes/Cafe/Triangle/TriangleBase.html
Allexperts Geometry Q&A:
Volunteer tutors help you work through your geometry problems for
free.
http://www.allexperts.com/getExpert.asp?Category=2060
ArXiv Front: MG Metric Geometry:
Metric geometry section of the mathematics e-print arXiv.
http://front.math.ucdavis.edu/math.MG
On the Fourth Dimension:
Concepts of the fourth dimension explained simply.
http://www.mninter.net/~jmcmanus/4d/
The Geometry of the Sphere:
This material was the text for part of the Advanced Mathematics
course in the High School Teachers Program at the IAS/Park City
Mathematics Institute at the Institute for Advanced Study during
July of 1996.
http://math.rice.edu/~pcmi/sphere/
The Math Forum's K-12 Geometry:
Select classroom materials for geometry teachers and students,
software for geometry, interactive geometry classroom resources,
Internet projects, selected geometry elsewhere on the Internet, and
public forums for discussing geometry.
http://mathforum.com/geometry/
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.
http://mathforum.com/powgrepform.html
GLaD: Introduction:
A historical introduction to a new Euclidean construction by David
Goldenheim and Daniel Litchfield. Dynamic Geometer's Sketchpad files
are included.
http://world.std.com/~wij/glad/index.html
Intensified Geometry Curriculum Review:
A comprehensive, illustrated review of concepts covered in an
Intensified Geometry textbook/class.
http://www.charm.net/~bradj/geometry/
GeomNet:
Family of geometric computing servers execute a variety of geometric
algorithms on behalf of remote clients, which can be either users
interacting through a Web browser interface or application programs
connecting directly through sockets.
http://loki.cs.brown.edu:8081/graphserver/
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.
http://m759.freeservers.com/
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.
http://www.geom.umn.edu/docs/doyle/mpls/handouts/handouts.html
Packomania:
This site collects the best known packings of equal objects in
containers together with source codes to obtain them numerically.
http://hydra.nat.uni-magdeburg.de/packing/packing.html
Math 3210 - Higher Geometry I:
Course notes by Bill Cherowitzo.
http://www-math.cudenver.edu/~wcherowi/courses/m3210/m3210.html
Cuboid and Cube Surface Distances:
A java applet with substantial analysis related to distances on a
rectangular box.
http://www.btinternet.com/~se16/js/cuboid.htm
Wallpaper Groups:
Images and descriptions of the 17 plane symmetry groups.
http://www.clarku.edu/~djoyce/wallpaper/
Geometry Page from Interactive Mathematics Miscellany:
More than 120 articles on topics in elementary and not so elementary
geometry, many with interactive Java illustrations and multiple
proofs.
http://www.cut-the-knot.com/geometry.html
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.
http://www.geom.umn.edu/docs/reference/CRC-formulas/
Menelaus' Theorem and its Applications:
Theorems involving Menelaus' theorem and some applications of
Menelaus' theorem to geometry problems.
http://hamiltonious.virtualave.net/essays/othe/finalpaper4.htm
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'.
http://www.cut-the-knot.com/triangle/Morley/index.html
Math Forum: Search geometry-research:
Geometry professors and instructors may keep informed of the latest
research conducted in their field at the geometry-research
discussion list.
http://mathforum.org/discussions/epi-search/geom.research.html
Math Forum: Search geometry-forum:
Those interested in examining the previous incarnation of the Math
Forum may search the archives of the Geometry Forum.
http://mathforum.org/discussions/epi-search/geom.forum.html
Geometry Activities:
By Ephraim Fithian.
http://homepage.mac.com/efithian/geometry.html
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.
http://www.geocities.com/kiranisingh/center.html
Paul Bourke's Geometry Page:
Includes formulas, definitions and three dimensional image
illustrations.
http://astronomy.swin.edu.au/~pbourke/geometry/
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.
http://xahlee.org/PageTwo_dir/more.html
Thinkquest Library's Geometry Page:
Covers rules for angles, right triangles and plane figures. Also,
has a trigonometry section.
http://library.thinkquest.org/10030/geocon.htm?tqskip1=1&tqtime=0420
Mathematical Curves and Surfaces:
Graphical representations of computer generated forms.
(French/English).
http://perso.wanadoo.fr/roger.assouly/
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.
http://agutie.homestead.com/
A New Way to Calculate a Triangle's Area:
Using the length of the three sides. The proof is better understood
than the old one.
http://hometown.aol.com/tienchien/myhomepage/find_triangle_area.html
Occurrence of the Conics:
Images of conics by Jill Britton.
http://ccins.camosun.bc.ca/~jbritton/jbconics.htm
Conjectures Produced by the Program Graffiti:
Graffiti is a computer program that makes conjectures in mathematics
and chemistry. Links to the conjectures and bibliography.
http://cms.dt.uh.edu/faculty/delavinae/research/wowref.htm
Geometric Group Theory:
Information and resources about geometric group theory and
low-dimensional topology. People, groups, meetings, links.
http://www.math.ucsb.edu/~jon.mccammond/geogrouptheory/
Geometry Machine:
3D virtual reality geometrical images of vectors, lines and planes.
Needs a VRML viewer or plugin such as live3D.
http://www.scit.wlv.ac.uk/~cm1993/geometry/INTRO.HTM
The 4th Dimension:
Visual and mathematical descriptions of higher dimensional objects,
with Java applets for displaying and rotating images such as Steiner
surfaces, Klein bottles, and minimal surfaces.
http://www.uta.edu/optics/sudduth/4d/index.htm
Encyclopedia of Triangle Centers:
By Clark Kimberling. Over 1000 triangle centres in a searchable
compilation with diagrams.
http://faculty.evansville.edu/ck6/encyclopedia/
Pythagorean Theorem:
A collection of 43 proofs - some interactive - of the Pythagorean
theorem.
http://www.cut-the-knot.org/pythagoras/index.shtml
