Useful links for geometry

Web resources are changing – some of them stay long, some disappear fast. Therefore at any given moment we can not guarantee that all of these links will work as they work now. We also do not know whether their content will satisfy your needs. These are just some of our suggestions.

The Geometry Center

MathPages/Geometry

The Math Forum

MathGate

Internet Math Library

The Geometry Junkyard

The Geometry Forum

Geometry in Action

Science/Math/Geometry

Geometry in Motion

Geometry – The Online Learning Center

Collection of GSP sketches

 

Mathematical videos:

NotKnot – computer animated hyperbolic space

Outside In – Thurston’s sphere eversion

The Shape of Space

Spherical Geometry

Egg Math

The Geometry of the Sphere

Spherical Sketchpad

 

Hyperbolic Geometry

Software for hyperbolic geometry - NonEuclid offers straightedge and compass constructions in hyperbolic geometry.

Topology and Geometry Software by Jeff Weeks

Geomview – an interactive viewing program

 

Some papers on teaching geometry

Dynamic geometry programs and the practice of geometry paper by Walter Whitely

The Decline and Rise of Geometry in 20th Century North America paper by Walter Whitely

 

Books on-line

Elements of geometry and trigonometry from the works of A.M. Legendre / adapted to the course of mathematical instruction in the United States by Charles Davies – on p.250 starts spherical geometry

A treatise on the cycloid and all forms of cycloid curves and on the use of such curves in dealing... by Proctor

Spherical trigonometry for the use of colleges and schools by Todhunter.

The University of Michigan historic books collection has following books on-line, which can be useful in geometry class: