- Round sphere with six charts generated by orthogonal projections to coordinate planes
- Geographic coordinates on the surface of the Earth as polar coordinates with North Pole at the center
- Illustration to the proof of the area formula for a geodesic triangle of the sphere
- Genus two surface embedded to the Euclidean space with curvature marked by colors
- Levels of the height function of a torus
- Cutting layers form the Klein bottle to produce a Mobius strip

Last updated on JUly 29, 2008