Chamfer (geometry)
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In geometry, a chamfer or edge-truncation is a topological operator that modifies one polyhedron into another. It separates the faces by reducing them, and adds a new face between each two adjacent fa
Historical drawings of truncated tetrahedron and slightly chamfered tetrahedron.
Modell, Kristallform Tetraeder Tetraeder Krantz 394
Modell, Kristallform Würfel Rhombendodekaeder Krantz 428
Modell, Kristallform Oktaeder Rhombendodekaeder Krantz 432
Regular dodecahedron
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A regular dodecahedron or pentagonal dodecahedron is a dodecahedron composed of regular pentagonal faces, three meeting at each vertex. It is one of the Platonic solids, described in Plato's dialogues
Regular dodecahedron painting by Johannes Kepler
Kepler's Platonic solid model of the Solar System
Roman dodecahedron
The coccolithophore Braarudosphaera bigelowii covered with a coccosphere formed of twelve pentaliths