Dihedral groups in abstract algebra

In the previous video I showed a square and its symmetric transformations. This is actually a dihedral group in four elements.

In this video I explain what a dihedral group is, but way of visual examples and the selection of permutations of a set.

At the end I use the Wolfram Language to show you the elements of larger dihedral groups as well as the Cayley tables of these groups.