A mark D4
The coat-of-arms of the Cavalieri, in piazza dei Cavalieri, in Pisa, is an example of a rosette with dihedral group of symmetry of type D4.
© matematita
The image belongs to the sections...:
*4. (D4) (Symmetry)
Coat of arms, trade marks and flags (Anthology of images)
Coat of arms, trade marks and flags (Symmetry)
