File:Ptolemy sine proof.svg
Original file (SVG file, nominally 460 × 460 pixels, file size: 2 KB)
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Summary[edit]
| Description | France
Geometric representation for the Ptolemy's theorem: if a quadrilateral is inscribed in a circle then the sum of the products of its two pairs of opposite sides is equal to the product of its diagonals. Proof using the Law of Sines. |
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| Source |
self-made, vectorized version. |
| Date |
30 March 2008 |
| Author | |
| Permission (Reusing this file) |
See below. |
| Other versions | Image:Ptolemy sine proof.jpg |
Licensing[edit]
 | 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. |
   | This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 License. This licensing tag was added to this file as part of the GFDL licensing update. |
 | This file is a candidate to be copied to Wikimedia Commons.
Any user may perform this transfer; refer to Wikipedia:Moving files to Commons for details. If this file has problems with attribution, copyright, or is otherwise ineligible for Commons, then remove this tag and DO NOT transfer it; repeat violators may be blocked from editing. Other Instructions
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 | This media file is either in the public domain or published under a free license, and contains no inbound file links. If this media file is useful, then it should be transferred to the Wikimedia Commons. If this media is not useful, then please propose it for deletion or list it at files for discussion. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:05, 30 March 2008 | | 460 × 460 (2 KB) | Verdy p (talk | contribs) | "font-size:0.8em" does not work either in MediaWiki's SVG renderer, use absolute sizes (and relative dy offsets for tspan) in pixels. |
| 23:02, 30 March 2008 |  | 460 × 460 (2 KB) | Verdy p (talk | contribs) | fix for "font-size:80%" bug in Mediawiki's SVG renderer (it should be "0.8em", relative to current font-size, but not to document size!) | |
| 22:57, 30 March 2008 |  | 460 × 460 (2 KB) | Verdy p (talk | contribs) | compacted manually | |
| 21:27, 30 March 2008 |  | 460 × 460 (21 KB) | Verdy p (talk | contribs) | == Summary == {{Information |Description=Geometric representation for the Ptomely's theorem: the product of the two diagonal lengths equals the product of each pair of opposed sides. |Source=self-made |Date=30 March 2008 |Location=France |Author=[[Use |
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