Art of Problem Solving
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Ptolemy's Theorem: Revision history

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9 May 2021

15 August 2017

23 July 2017

28 June 2017

28 April 2016

11 February 2016

4 July 2015

27 January 2015

22 May 2014

25 March 2014

22 January 2014

17 August 2010

6 June 2010

14 April 2010

11 April 2010

17 November 2007

7 October 2007

17 February 2007

15 February 2007

28 July 2006

10 July 2006

26 June 2006

24 June 2006

22 June 2006

20 June 2006

18 June 2006