Supplements for

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

David W. Henderson, Cornell University

with writing input from Daina Taimina

Physical Models of Spheres and Hyperbolic Planes

Spheres:

• For ordering information on Lenart Sphere models and related supplements see http://www.keypress.com/product_info/lenartsph.html.
• For discussions on using the sphere models, see http://mathforum.org/~sarah/HTMLthreads/articletocs/lenart.sphere.html.
• "Geometry on the Sphere" a course at the IAS/Park City Institute, 1996

Hyperbolic Planes:

• Crocheted hyperbolic planes are available in limited quantities. Contact Daina Taimina dt34@cornell.edu for more information.
• NonEuclid, a free interactive approach to hyperbolic geometry with the upper half plane and disks models.
• Templates for paper hyperbolic planes: Annuli, Hexagons, Heptagons, Triangles .
  And construction directions from Chapter 5.

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