Drexel dragonThe Math ForumDonate to the Math Forum

The Math Forum Internet Mathematics Library

Positive and negative Euler characteristic (Geometry and the Imagination)

_____________________________________
Library Home || Full Table of Contents || Suggest a Link || Library Help
_____________________________________

Visit this site: http://geom.math.uiuc.edu/docs/education/institute91/handouts/node36.html

Author:Conway, Doyle, Gilman, Thurston; The Geometry Center
Description: A symmetry pattern on the sphere always gives rise to a quotient orbifold with positive Euler characteristic. In fact, if the order of symmetry is k, then the Euler characteristic of the quotient orbifold is 2/k, since the Euler characteristic of the sphere is 2. However, the converse is not true...

Levels: Middle School (6-8), High School (9-12), College
Languages: English
Resource Types: Lesson Plans and Activities
Math Topics: Non-Euclidean Geometry, Symmetry/Tessellations

[Privacy Policy] [Terms of Use]

_____________________________________
Home || The Math Library || Quick Reference || Search || Help
_____________________________________

© 1994-2014 Drexel University. All rights reserved.
http://mathforum.org/
The Math Forum is a research and educational enterprise of the Goodwin College of Professional Studies.The Math Forum is a research and educational enterprise of the Drexel University School of Education.