File:Academ Four times three vertices equals twelve vertices.svg
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English: To construct the twelve vertices of a regular dodecagon, you can take at first an equilateral triangle. Then, construct three other equilateral triangles, with same size and same center, by pivoting the initial triangle 90 degrees around its center, three times successively in the same sense. The number of vertices of all the triangles equals: 4 × 3 = 12. The vertices are evenly distributed on the circumcircle of the four triangles. |
| Date | |
| Source | Own work |
| Author | Baelde |
| SVG development |  This /Baelde was created with a text editor. |
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Arthur Baelde, the copyright holder of this work, hereby publishes it under the following licenses:
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Attribution: Arthur Baelde
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 07:59, 9 July 2012 | | 750 × 750 (1 KB) | Baelde (talk | contribs) | tighter margins |
| 09:15, 3 July 2012 |  | 750 × 750 (1 KB) | Baelde (talk | contribs) | {{Information |Description ={{en|1=To construct the twelve vertices of a regular dodecagon, you can take at first an equilateral triangle. Then, construct three other equilateral triangles, with same size and same center, by pivoting t... |
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