User contributions for 2603:6011:4802:7732:7C24:56FC:D86E:A3CE
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10 May 2024
- 04:0804:08, 10 May 2024 diff hist +7 Tridecahedron The claim that there are only five regular polyhedra is false. There are five known regular convex polyhedra (the Platonic Solids), but there are also regular concave polyhedra (such as the Kepler-Poinsot polyhedra). current Tags: Visual edit Mobile edit Mobile web edit
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