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A (3,4,5,4) uniform polyhedron. Around each vertex you can see an equilateral triangle, a ...
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...
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...
The rotation axis of order 3 which goes through two opposite vertices of the cube. See ano...
The rhombic triacontahedron can be coloured with five colours so that, around the vertices...
