A rosette
This drawing has been used for an exhibit of Simmetria, giochi di specchi - Symmetry, playing with mirrors, in which visitors are asked to find out the symmetry axes of given drawings like this one. In this case, there are no symmetry axes, as we can easily verify with a mirror.
© matematita
The image belongs to the sections...:
6. (C6) (Symmetry)
The rosettes (From the exhibitions of matematita)
Further information:
http://specchi.mat.unimi.it
