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Summary
| Description |
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. |
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| Date | Uploaded by en:User:Dicklyon to en.wikipedia in August 2006 (log). | ||
| Source | Own work by en:User:Dicklyon | ||
| Author | en:User:Dicklyon | ||
| Permission (Reusing this file) |
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File history
Click on a date/time to view the file as it appeared at that time.
| 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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