  This presentation starts with the regular polygons, of course, then with the
Platonic and Archimedean solids. The latter ones are whose symmetry groups are
transitive on the vertices, and in addition, whose faces are regular polygons
(see only I. Prok's home page [11] for them). Then there come these symmetry
groups themselves (starting with the cube and octahedron, of course, then
icosahedron and dodecahedron). Then come the space filling properties: Namely
the cube is a space filler for the Euclidean space E^3. Then we jump for the
other regular solids that cannot fil E^3, but can hyperbolic space H^3, a new
space. These can be understood better if we start regular polygons, of course,
that cannot fil E^2 in general, but can fil the new plane H2, as hyperbolic or
Bolyai-Lobachevsky plane. Now it raises the problem, whether a football
polyhedron - with its congruent copies - fil a space. It turns out that E^3 is
excluded (it remains an open problem - for you, of course, in other aspects),
but H^3 can be filled as a schematic construction show this (Fig. 5), far from
elementary. Then we mention some stories on Buckminster Fuller, an architect,
who imagined first time fullerens as such crystal structures. Many problems
remain open, of course, we are just in the middle of living science.
