Tham khảo Đường_tròn

  1. ↑ krikos, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus
  2. ↑ Arthur Koestler, The Sleepwalkers: A History of Man's Changing Vision of the Universe (1959)
  3. ↑ Proclus, The Six Books of Proclus, the Platonic Successor, on the Theology of Plato Tr. Thomas Taylor (1816) Tập 2, Chương 2, "Of Plato"
  4. ↑ Chronology for 30000 BC to 500 BC. History.mcs.st-andrews.ac.uk. Truy cập 03-05-2013.
  5. ↑ Squaring the circle. History.mcs.st-andrews.ac.uk. Trụy cập 03-05-2013.
  6. ↑ Katz, Victor J. (1998), A History of Mathematics / An Introduction (ấn bản 2), Addison Wesley Longman, tr. 108, ISBN 978-0-321-01618-8 
  7. ↑ Harkness, James (1898). Introduction to the theory of analytic functions. London, New York: Macmillan and Co. tr. 30. [liên kết hỏng]
  8. ↑ Ogilvy, C. Stanley, Excursions in Geometry, Dover, 1969, 14–17.
  9. ↑ Altshiller-Court, Nathan, College Geometry, Dover, 2007.
  10. ↑ Incircle – from Wolfram MathWorld Lưu trữ 2012-01-21 tại Wayback Machine.. Mathworld.wolfram.com (2012-04-26). Retrieved on 2012-05-03.
  11. ↑ Circumcircle – from Wolfram MathWorld Lưu trữ 2012-01-20 tại Wayback Machine.. Mathworld.wolfram.com (2012-04-26). Retrieved on 2012-05-03.
  12. ↑ Tangential Polygon – from Wolfram MathWorld Lưu trữ 2013-09-03 tại Wayback Machine.. Mathworld.wolfram.com (2012-04-26). Retrieved on 2012-05-03.

Tài liệu tham khảo

WikiPedia: Đường_tròn http://mathworld.wolfram.com/Circumcircle.html http://mathworld.wolfram.com/Incircle.html http://mathworld.wolfram.com/TangentialPolygon.htm... http://dlxs2.library.cornell.edu/cgi/t/text/text-i... http://www.perseus.tufts.edu/hopper/text?doc=Perse... http://www-history.mcs.st-andrews.ac.uk/history/Ch... http://www-history.mcs.st-andrews.ac.uk/history/Hi... https://books.google.com/books?id=E1HYAAAAMAAJ https://web.archive.org/web/20120120120814/http://... https://web.archive.org/web/20120121111333/http://...