A fern
The structure of a fern-tree branch puts in evidence the glide reflection: every leaf is obtained from the composition of a reflection (of the central stalk) and a translation. It is the same structure of the footprints of a regular walk. Obviously, we can't say that the branch has a symmetry of glide reflection, because it should be elongated to infinity...
© matematita
foto di Serena Barbanotti
The image belongs to the sections...:
Flowers (Symmetry)
Leaves (Anthology of images)
Suggestion of symmetry (Symmetry)
(3D geometry)
(2D geometry)
