Images for Mathematics

How to make a rosette D4

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If we fold up a sheet of paper as illustrated in the figure and cut out any shape, we get an example of rosette with dihedral symmetry of type D4.
The image has been realized for the exhibition Simmetria, giochi di specchi - Symmetry, playing with mirrors.

The image belongs to the sections...:
*4. (D4) (Symmetry)