You can get persuaded of the the fact that convexity is unimportant for the validity of Eu...
You can get persuaded of the the fact that convexity is unimportant for the validity of Eu...
The surface of the Géode in Paris. If a polyhedron has triangular faces and has 5 or 6 tr...
A polyhedron that is homeomorphic to a bitorus, a surface of genus 2 that can be visualize...
A polyhedron that is homeomorphic to a torus; for this polyhedron Euler’s relation does ...
If a polyhedron has triangular faces and has 5 or 6 triangles around each vertex, the vert...
On the beach of Giulianova (Teramo, Italy), this structure recalls (one half of) the usual...
A golf ball is made out of pentagons and hexagons, three of them arriving in each vertex. ...
A San Sebastian (Paesi Baschi, Spagna), questo lampione ha in cima una sfera che sembra di...
A San Sebastian (Paesi Baschi, Spagna), la sfera su questo lampione sembra divisa in trian...
