This chapter on historical strands of geometry is much more expanded in the book Crocheting Adventures with the Hyperbolic Planes by Daina Taimina (AK Peters, 2009)
Experiencing Meaning in Geometry - by David W. Henderson & Daina Taimina
How to Use History to Clarify Common Confusions in Geometry by David W. Henderson & Daina Taimina
Crocheted Hyperbolic Plane by David W. Henderson & Daina Taimina
Annuli for hyperbolic paper model this is a template to print out for making hyperbolic paper model from anulli
Template for hyperbolic soccer ball - please print 3 pages with hexagons and one page of heptagons to have a template for 3 models, of course, you can make your model as big as you like :-)
Software for hyperbolic geometry - NonEuclid offers straightedge and compass constructions in hyperbolic geometry.
Square Roots in the Sulbasutra by David W. Henderson
Interactive examples by David W. Henderson (requires a Java 1.1 compatible browser, please be patient ? first download is slow):
Helpful websites:
Crocheted Hyperbolic Plane by David W. Henderson & Daina Taimina
Annuli for hyperbolic paper model this is a template to print out for making hyperbolic paper model from anulli
Template for hyperbolic soccer ball - please print 3 pages with hexagons and one page of heptagons to have a template for 3 models, of course, you can make your model as big as you like :-)
Reflection of triangle in upper half plane model ? interactive example by David W. Henderson (requires a Java 1.1 compatible browser, please be patient ? first download is slow)
Geometric solutions of Quadratic and Cubic Equations by David W. Henderson
Kinematic models for Design Digital Library
Peaucellier-Lipkin linkage links:
