Symmetry groups of polygons and planar patterns
Explore the cyclic group Cn of rotational symmetries of a regular polygon.
Visualise the dihedral group Dn of symmetries of a regular polygon.
Explore the Klein four-group V4 of symmetries of a non-square rectangle.
Discover the 7 frieze groups that describe symmetries of infinite strips.
Explore the 17 wallpaper groups that describe the two-dimensional repetitive patterns of the plane.
Explore tilings of the sphere, Euclidean plane, and hyperbolic plane generated by reflections.