<< - Page 1 2 3 4 5 6 7 8 9 10 11 - >>
A courtyard of Ca’ Granda, in Milan. The columns of the arcade and those of the upper fl...
A regular dodecahedron. You can see a net.Image has been used in the posters on polyhedra ...
We can pick out 8 vertices among the 20 vertices of a dodecahedron so that they can be the...
The pyramids which stand in front of the Museum Le Louvre in Paris.
A regular icosahedron. You can reconstruct it in the mirrors of the kaleidoscope correspon...
The 5 convex deltahedra that aren’t regular polyhedra. Deltahedra are polyhedra whose fa...
In the quarter La Défense in Paris this skyscraper provides a good example of ruled surfa...
This polyhedron can’t be moulded and shaped into a sphere and in this case Euler’s rel...
You can get persuaded of the the fact that convexity is unimportant for the validity of Eu...
In the section “Maxima and minima” at the exhibition matemilano there’s an exhibit w...
