File:Regular enneagon symmetries.png
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Summary
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English: Symmetries of a regular enneagon, with markups
Reworked from "The Symmetries of Things", Chapter 20 The regular enneagon has Dih9 dihedral symmetry, order 18, and 5 lower dihedral and cyclic symmetries. The dihedral symmetries pass through vertices and edges. Cyclic symmetries in the middle column are labeled as g for their central gyration orders. |
| Date | |
| Source | Own work |
| Author | Tomruen |
| Other versions | File:Symmetries of enneagon.png |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:52, 5 September 2021 | | 633 × 1,021 (44 KB) | wikimediacommons>Tomruen | Rework, half groups below, index 3 diagonal |
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