File:Ptolemy Pentagon.svg
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[edit] Summary
English: Application of Ptolemy's theorem to the quadrilateral made by removing a vertex from a regular pentagon yields b/a = phi, the golden ratio. This drawing illustrates it.
Uploaded by en:User:Dicklyon to en.wikipedia in August 2006 (log).
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This work has been released into the public domain by its author, Dicklyon at the English Wikipedia project. This applies worldwide. In case this is not legally possible:
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:29, 16 February 2008 | | 526 × 526 (10 KB) | Stotr | (This is a graphic by en:User:Dicklyon which shows an application of Ptolemy's theorem to the quadrilateral made by removing a vertex from a regular pentagon yields b/a = phi, the golden ratio. He released it into the public domain; see http://en.wiki) |
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