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A sphere with the track of the planes of symmetry of the regular tetrahedron on its surfac...
A sphere with the tracks of the planes of symmetry of the regular octahedron on its surfac...
A subdivision of the sphere into 120 spherical triangles with angles 36°, 60°, 90°. Fr...
A subdivision of the sphere into 48 spherical triangles with angles 45°, 60°, 90°. From...
One of the ten signposts of the MIC project "Maths in the city". . This one is placed on t...
In the walk by the side of the river Isarco, in Bolzano, a wind rose shows the distance fr...
One of the ten signposts of the MIC project "Maths in the city". . This one is placed on t...
In the walk by the side of the river Isarco, in Bolzano, a wind rose shows the distance fr...
A tiling of the sphere with 16 spherical triangles with angles 45° (= 180°/4), 90°, 90Â...
A tiling of the sphere with 120 spherical triangles with angles 36°, 60°, 90°. The grea...
