Cutting along a symmetric quadrilateral to construct an embedded flexible dodecahedron
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908581396217856 |
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| author | Atlason, Elvar |
| author_facet | Atlason, Elvar |
| contents | Until recently, the simplest known flexible polyhedron was Steffen's polyhedron on nine vertices. However, in 2024, an embedded flexible polyhedron on eight vertices was announced. It attains the known lower bound for the number of vertices, showing that the simplest embedded flexible polyhedron has eight vertices. We introduce a method for making new flexible polyhedral surfaces from old ones. This general method applies to the above minimal example, giving another proof of its flexibility. We also construct a different flexible dodecahedron on eight vertices. This improves both the range of motion and the simplicity of the exposition. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_06897 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cutting along a symmetric quadrilateral to construct an embedded flexible dodecahedron Atlason, Elvar Metric Geometry 52C25 (Primary), 52B10 (Secondary) Until recently, the simplest known flexible polyhedron was Steffen's polyhedron on nine vertices. However, in 2024, an embedded flexible polyhedron on eight vertices was announced. It attains the known lower bound for the number of vertices, showing that the simplest embedded flexible polyhedron has eight vertices. We introduce a method for making new flexible polyhedral surfaces from old ones. This general method applies to the above minimal example, giving another proof of its flexibility. We also construct a different flexible dodecahedron on eight vertices. This improves both the range of motion and the simplicity of the exposition. |
| title | Cutting along a symmetric quadrilateral to construct an embedded flexible dodecahedron |
| topic | Metric Geometry 52C25 (Primary), 52B10 (Secondary) |
| url | https://arxiv.org/abs/2510.06897 |