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Sponsored Links:
Math Forum: Search geometry-forum (Popularity:  )
http://mathforum.org/discussions/epi-search/geom.forum.html
Those interested in examining the previous incarnation of the Math Forum may search the archives of the Geometry Forum.
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Diamond Theory (Popularity: )
http://m759.freeservers.com/
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.
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Paul Bourke's Geometry Page (Popularity: )
http://astronomy.swin.edu.au/~pbourke/geometry/
Includes formulas, definitions and three dimensional image illustrations.
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Fundamentals of Geometry (Popularity: )
http://polly.phys.msu.ru/~belyaev/geometry.htm
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.
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Geometry in Action (Popularity: )
http://www.ics.uci.edu/~eppstein/geom.html
Includes collections from various areas in which ideas from discrete and computational geometry meet real world applications.
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Cuboid and Cube Surface Distances (Popularity: )
http://www.btinternet.com/~se16/js/cuboid.htm
A java applet with substantial analysis related to distances on a rectangular box.
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Tim Lister's Hyperbolic Geometry (Popularity: )
http://mcs.open.ac.uk/tcl2/nonE/nonE.html
Cabri constructions for the demonstration of the basic concepts of hyperbolic geometry in the Poincare disc model.
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Encyclopedia of Triangle Centers (Popularity: )
http://faculty.evansville.edu/ck6/encyclopedia/
By Clark Kimberling. Over 1000 triangle centres in a searchable compilation with diagrams.
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The Geometry Junkyard (Popularity: )
http://www.ics.uci.edu/~eppstein/junkyard/
Usenet clippings, web pointers, lecture notes, research excerpts, papers, abstracts, programs, problems, and other stuff related to discrete and computational geometry.
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Analytical Geometry Calculator (Popularity: )
http://easycalculation.com/analytical/analytical.php
Online Analytical Geometry Calculator to calculate all the geometric mathematical calculations with just mouse moves. It also provides tutorials to solve difficult problems too.
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Wilson Stothers' Inversive Geometry and CabriJava Pages (Popularity: )
http://www.maths.gla.ac.uk/~wilson/cabripages/inversive/inversive0.html
Includes Steiner's Porism and the arbelos.
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Packomania (Popularity: )
http://hydra.nat.uni-magdeburg.de/packing/packing.html
Includes packings of equal objects in containers together with source codes to obtain them numerically.
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Bob's Pages (Popularity: )
http://members.ozemail.com.au/~llan/
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.
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A Gallery of Interactive On-Line Geometry (Popularity: )
http://www.geom.uiuc.edu/apps/gallery.html
At the Geometry Center.
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Steiner Surfaces (Popularity: )
http://www.ipfw.edu/math/Coffman/steinersurface.html
Mathematical descriptions and ray-traced images of various types of Steiner surfaces
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Conjectures Produced by the Program Graffiti (Popularity: )
http://cms.dt.uh.edu/faculty/delavinae/research/wowref.htm
Graffiti is a computer program that makes conjectures in mathematics and chemistry. Links to the conjectures and bibliography.
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A New Way to Calculate a Triangle's Area (Popularity: )
http://hometown.aol.com/tienchien/myhomepage/find_triangle_area.html
Using the length of the three sides. The proof is better understood than the old one.
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Erich's Packing Center (Popularity: )
http://www.stetson.edu/~efriedma/packing.html
Graphics and links for various packing, tiling and covering problems.
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Morley's Miracle (Popularity: )
http://www.cut-the-knot.com/triangle/Morley/index.html
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'.
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Math 3210 - Higher Geometry I (Popularity: )
http://www-math.cudenver.edu/~wcherowi/courses/m3210/m3210.html
Course notes by Bill Cherowitzo.
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