| Science in the Ancient World: An Encyclopedia | Proceedings of the Royal Irish Academy |
|---|---|
| 10 in Modern Geometry: The Straight Line and Circle | Altshiller-Court, Nathan, College Geometry, Dover, 2007 orig |
"On the remainder term in the Madhava—Leibniz's series".
| The Secrets of Triangles, Prometheus Books, 2012 | "The Evolution of the Isoperimetric Problem" |
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| See in particular the bottom of p | Washington, DC, USA: Mathematical Association of America |
Nelson, Roger, "Euler's triangle inequality via proof without words," Mathematics Magazine 81 1 , February 2008, 58-61.
| Alsina, Claudi and Nelsen, Roger, Icons of Mathematics | , Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus• Martin Celli, "A Proof of the Butterfly Theorem Using the Similarity Factor of the Two Wings", 16, 2016, 337—338 |
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| 1914 , page 193 via• "Circles: A Mathematical View, rev | "Inversion in a Circle" and "Inversion of Lines and Circles |
, The Elements of Geometry, in Eight Books; or, First Step in Applied Logic London, Longmans, Green, Reader and Dyer, 1874 , p.
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