A tile
The shape of a tile, used by the architect Cini Boeri. With this type of tile, we can make tessellations of 11 different types of symmetry (among the 17 possible tessellations): o,*×, **, ××, 2222, 2*22, **m, 22*, 22×, 442, 4*2.
© matematita
The image belongs to the sections...:
Images from the symmetry section (From the exhibitions of matematita)
Further information:
http://matemilano.mat.unimi.it