P2MM
This frieze group is very similar to p1m1. However, p2mm differs because it also has a horizontal reflection. This applet allows you to create different patterns by moving points around. You are also able to change the color of the points as you wish. Can you find more than just reflection symmetry in this group? If there is rotational symmetry what is the degree of the rotation? Can you have more than one degree of rotation for this group? What type of patterns can you create? Can you create a different frieze group with this pattern?