## Geometry |

- Mathematics Archives - Topics in Mathematics - Geometry
- Galaxy: Geometry < Mathematics < Science
- Links on Geometry
*by Darij Grinberg* - Yahoo! Directory Mathematics > Geometry

- Angle between two Simson lines Theorem
*by Antonio Gutierrez* - Angle Trisection
*by Bob Hesse*Geometry Forum Articles - Archimedean Solids (Pappus)
- Archimedes Book of Lemmas: Introduction. 1 - 15 Propositions on Circles
*by Antonio Gutierrez* - Thomas
**B**anchoff's Project List - Build a Rainbow (Gallery of Interactive geometry)
**cabri géomètre**- Circles of Light: The Mathematics of Rainbows (Gallery of Interactive Geometry)
- Computational Geometry Pages
*by Jeff Erickson* - Conic Sections (Visual Dictionary of Special Plane Curves)
*- Xah Lee* **Dave's Math Tables**- Deep Secrets - The Great Pyramid, The Golden Ratio and The Royal Cubit
*by L. Cooper* - Demonstration of the Archimedes' solution to the Trisection problem
- Elliptic Geometry Drawing Tools
*by Bill Findell* - EMAT 4600/6600 Problem Solving in Mathematics
*by Jim Wilson* - Encyclopedia of Triangle Centers
*by Clark Kimberling* - Erich's Packing Center
*by Erich Friedman* **Euclid's Elements, Introduction**- Byrne's edition of
**Euclid** - An Introduction to the Works of
**Euclid**with an Emphasis on the Elements*by Donald Lancon Jr* - Euclid's Fourteenth Book - Ivars Peterson (MathLand)
- The Euler Number (Geometry and the Imagination)
- Exercises in Imagination (Geometry and the Imagination)
- Exercises in Math Readiness for University (EMR)
- Famous Curves Index
- A Field Guide to the Orbifolds (Geometry and the Imagination)
**A Gallery of Interactive On-Line Geometry***University of Minnesota Geometry Center*- Galleries - Mathematical Imagery
*by Jos Leys* -
**The Geometer's Sketchpad®**Key Curriculum Press, Innovators in Mathematics Education- The Geometer's Sketchpad Classroom Resources on the Web
*The Math Forum* - The Geometer's Sketchpad®
*(keypress)* - The Goal Angle Problem
- GSP Lessons
- Lesson plans for Geometer's Sketchpad Department of Higher Education of New Jersey
- Mechanical Linkages
*(The Geometer's Sketchpad)* - Miscellaneous Sketches from Key
- Math Forum Classroom Resources
- Polyhedra
*by Eric Sasson* - Sketchpad 3.0 Gallery
*by Bill Finzer and Nick Jackiw* - Sketchpad Activity Center
*(Geometry Forum)*

- The Geometer's Sketchpad Classroom Resources on the Web
**Geometric Sculpture of George W. Hart**- Geometrie bei MM-Physik
*by P.Krahmer* **geometry.net****Geometry***by Paul Bourke*- Geometry Activities
*by Ephraim Fithian* - Geometry -
*Math League Help Topics* - Geometry
*ThinkQuest* **Geometry in Action**- Applications of Discrete and Computational Geometry*David Eppstein***Geometry Algorithm Home****The Geometry Applet version 2.2**A Java applet used to illustrate Euclid's*Elements*David E. Joyce- Geometric Art Projects
*by Paul J Gies* **Geometry Center***(Univ. Minnesota)*- Course Materials
- Multimedia Documents at the Geometry Center
- Geometry Forum
**A**rticles - Geometry and the Imagination
*by Peter Doyle* - Maps (Geometry and the Imagination)
- Hyperbolic Geometry (Geometry and the Imagination)
- The Orbifold Shop (Geometry and the Imagination)
- Stereographic Projection (Geometry and the Imagination)
- Research Papers from the Geometry Center
- Geometry Formulas and Facts
*by Silvio Levy*

- Geometry Center - Sience U
- Geometry Construction Reference
*by Paul Kunkel* - Geometry Expressions
*Saltire Software* - Geometry Formulas and Facts by Silvio Levy
**Geometry Forum**(Math Forum)*at Drexel Univesity***The Geometry Junkyard**- David Eppstein

Combinatorial Geometry

Symmetry and Group Theory

Tilings

Triangles and Simplices

Width and Diameter- Geometry Problem of the Week
*Math Forum (Drexel University)* **Geometry Reference Archives**- Geometry Section Zona Land - Edward A. Zobel
- Geometry of the Sphere
*by John C. Polking - Rice University* **Geometry Step by Step**from the Land of the Incas*by Antonio Gutierrez*- Geometry and Topology
*is a fully refereed international journal* - Geometry Through Art
*by Norman Shapiro* - Geomview: 3D Visualization Software Geometry Center
- GrafEq Home
- Graph Theory Tutorials
*by Chris Caldwell* - Introduction to Geometry
- Jim King's Conic Macros
- Rotating 4D
**Hypercube***by Andrew Hamilton* - Hypergami (Geometry Forum Institute - Summer 1995
*by Michael Eisenberg and Ann Nishioka* - Building the
**Icosahedron**as a Class Project*- F.J. Wicklin* - The Interactive Geometry Software Cinderella
- Interactive Mathematics Miscellany and Puzzles, Geometry
*by Alexander Bogomolny* - Introduction to Symmetrics
*Author: Chaim Goodman-Strauss, revised and edited by Heidi Burgiel* - Introduction to Wall Paper Patterns
*Author: Chaim Goodman-Strauss, revised and edited by Heidi Burgiel* - JAVA Gallery of Interactive On-Line Geometry
*Geometry Center* - Johanneum Lüneburg Harmonie der Kegelschnitte
*Dr. Dörte Haftendorn* - Kali, Kali-Jot (Gallery of Interactive Geometry)
**The Landscape of Geometry Terms***- Antonio Gutierrez*- The Magma System for Algebra, Number Theory and Geometry
- mathematical curves by Jan Wassenaar
- Mathematics Graphics Gallery
*by Xah Lee* - mathlab.com a home of hands-on geometry
- MathPages: Geometry
- Michael Thwaites' Ellipses
- Monge's Theorm and Desargues' Theorem, Identified
- Napoleon's Theorem
*Geometry Forum, Swarthmore College* - NonEuclid - Hyperbolic Geometry Article + Software
*by Joel Castellanos* - Non-Euclidean Geometry
- Origami Page (Modular)
*by Jim Plank* - Ovals and Egg Curves
*by Jürgen Köller* - Pedal Triangles
- Pentagram & the Golden Ratio
*by Thomas M. Green* - Pentagon & Trigonometry
*by L. Cooper* - Pictures from Knots and Links (Geometry Center)
- Pythagorean TheoremS
*by Thomas M. Green* - The Planimeter
*by Paul Kunkel* - Polyhedra
*by Eric Sasson* -
**Encyclopedia of Polyhedra**--- Over 1000 Virtual Polyhedra*by G.W. Hart* - Pavilion of
**Polyhedreality**- images and geometry links -*G.W. Hart* - Platonic Solids in All Dimensions
*by John Baez* - Polyhedra - Ceramic models of polyhedra
*by Sigfrid G. Fregert* - Polyhedra - Suzanne Alejandre - Math Unit
- Tom Gettys' Polyhedral Solids
- Regular
**P**olyhedra*by Alexander Bogomolny* - The Regular
**P**olyhedra*by George Olshevsky* - Studies into
**P**olyhedra - Regular*by Anthony Thyssen* - The Postulates of Special Relativity
*by Andrew Hamilton* - Problem Solving with Heron's Formula
- Projective Conics (Gallery of Interactive Geometry) Geometry Center
- Pythagorean Theorem
*by Jim Reed* **Pythagorean Theorem***Alexander Bogomolny*- Pythagorean Triples
*by Eric S Rowland* - Pythagoras' Haven Euclid's Proof of the Pythagorean Theorem
- QuasiTiler (Gallery of Interactive Geometry)
- The Raft of the Medusa, Inspiration for Geometry problem solving with animation and fractals.
*by Antonio Gutierrez* - Reference Pieces on Space Euclid's Axioms and Postulates - Hilbert's Axioms of Geometry
- Symmetry and the Shape of Space
*by Chaim Goodman-Strauss* - Topics in Geometry
*by John O'Connor* - Tredjegradsekvationen
*av Peter Johansson* - Triangle: A Two-Dimensional Quality Mesh Generator
*by Jonathan Richard Shewchuk* - Triangle Centers
*by Clark Kimberling* - Triangles, Circles, and Waves (oh my!) - An Overview of Trigonometry
*by Kenny Felde* - Triangles in Elliptic Geometry
*(Thomas Banchoff's Project List)* **TRIGONOMETRY**- An introduction to TRIGONOMETRY
*by Johan.Claeys* **Mathematics Archives**- Topics in Mathematics - Trigonometry- Dave's short course in trigonometry
*by David E. Joyce* - Trigonometry Challenge
*Educational Software for Teaching Trigonometry* - Trigonometric Functions
- The trigonometric functions
*(history)* - Frequently Asked Questions About Trigonometry by J. David Eisenberg
- An introduction to TRIGONOMETRY
*by Johan.Claeys* - Trigonometry - maths online Gallery
- Trigonometry Realms by Edward A. Zobel - Zona Land
- Trigonometry Review Jerry L. Stanbrough
- The U of O Physics Student Page Vectors &
**Trigonometry**

- An introduction to TRIGONOMETRY
- Vectors
*by Gene Klotz* - Viewing Four-dimensional Objects in Three Dimensions
*Geometry Center* - A Visual Dictionary of Special Plane Curves
*by Xah Lee* - Visual Geometry Pages Technical University Berlin
- WebPisces (Gallery of Interactive Geometry)
- Whistler Alley Mathematics
*(Formerly Kunkel's Mathematics Lessons)*