Supplements for

Experiencing Geometry in Euclidean, Spherical, and Hyperbolic Spaces, Second Edition, 2001

David W. Henderson, Cornell University

with writing input from Daina Taimina

Dynamic Geometry Software

General

• Mathematics Forum
• For numerous links to Web pages related to geometry (including numerous links to dynamic software activities) see http://atle.abc.se/~m9847/geometr.html.

Cabri

Cinderella

• For information on Cinderella, see www.cinderella.de

Interactive Examples: All of these examples require a Java 1.1 compatible browser, and may take a long time to load the first time.

• Inversions of circles and points in circles
• Inversion of a line
• Reflection of triangle in upper half plane model

Geometer's Sketchpad

• Mathematics Forum
• Jim Wilson'sn GSP lessons
• GSP lessons from the Geometry Center
• Chaim Goodman-Strauss' hyperbolic plane sketches

Other dynamic geometry programs

• Wingeom: a free windows-based software with a 3-D component.
• NonEuclid, a free interactive approach to hyperbolic geometry with the upper half plane and disks models.
• PoincaréDraw, a free DOS-based program for the Poincaré disk model of hyperbolic geometry.
• Geometry Explorer, exploring Euclidean, Hyperbolic, Analytic, and Turtle Geometries

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