Geometry of the Sphere

This site consists of interactive lessons on the geometry of spheres, starting with the basics of a sphere and ending with Girad's Theorem and Euler's Formula. Lessons are in easy-to-manage bits with links to related concepts. Exercises build upon each other; most sections have one or two exercises. The concepts are explained clearly and concisely.

Not available.

John C. Polking, Rice University

Math

Science and Math

11, 12, AP