7 June 2023

• curprev 08:0108:01, 7 June 2023 Iraevid13 talk contribs 3,403 bytes +54 added equality case

29 December 2021

• curprev 16:0816:08, 29 December 2021 Etmetalakret talk contribs 3,349 bytes +26 No edit summary
• curprev 15:5515:55, 29 December 2021 Etmetalakret talk contribs 3,323 bytes −10 No edit summary

14 June 2020

• curprev 19:1019:10, 14 June 2020 Coltsfan10 talk contribs m 3,333 bytes +8 →Proof for Coplanar Case

27 February 2020

• curprev 09:5309:53, 27 February 2020 Imayormaynotknowcalculus talk contribs m 3,325 bytes +7 →Theorem

5 November 2017

• curprev 23:1223:12, 5 November 2017 Fatant talk contribs m 3,318 bytes −28 I think that ABCD doesn't have to be cyclic, PM me if I'm incorrect.

8 November 2014

• curprev 22:4622:46, 8 November 2014 Anticorncob496 talk contribs 3,346 bytes +391 No edit summary

17 June 2014

• curprev 12:0212:02, 17 June 2014 ChiefShoe talk contribs m 2,955 bytes +1 →Proof for Coplanar Case

11 June 2009

• curprev 09:2309:23, 11 June 2009 Math154 talk contribs 2,954 bytes +24 No edit summary
• curprev 09:1809:18, 11 June 2009 Math154 talk contribs 2,930 bytes −66 No edit summary
• curprev 08:3108:31, 11 June 2009 Math154 talk contribs 2,996 bytes +1,378 No edit summary

16 March 2009

• curprev 20:3920:39, 16 March 2009 Facis talk contribs 1,618 bytes 0 →Proof

18 December 2007

• curprev 22:5622:56, 18 December 2007 JBL talk contribs m 1,618 bytes 0 Ptolemy's inequality moved to Ptolemy's Inequality over redirect

15 December 2007

• curprev 16:1016:10, 15 December 2007 Temperal talk contribs m 1,618 bytes 0 Ptolemy's Inequality moved to Ptolemy's inequality

25 November 2007

• curprev 17:2617:26, 25 November 2007 Temperal talk contribs 1,618 bytes +131 wikify

9 November 2007

• curprev 08:3608:36, 9 November 2007 Rrusczyk talk contribs m 1,487 bytes +10 replaced iff. with if and only if

8 November 2007

• curprev 13:4613:46, 8 November 2007 1=2 talk contribs 1,477 bytes −2 No edit summary
• curprev 13:4613:46, 8 November 2007 1=2 talk contribs 1,479 bytes +48 No edit summary
• curprev 13:4213:42, 8 November 2007 1=2 talk contribs 1,431 bytes −51 No edit summary

14 October 2007

• curprev 12:5212:52, 14 October 2007 Minsoens talk contribs m 1,482 bytes −226 fixed typo

24 November 2006

• curprev 21:1121:11, 24 November 2006 Boy Soprano II talk contribs 1,708 bytes +95 reworded statement in a more general way
• curprev 12:2312:23, 24 November 2006 Boy Soprano II talk contribs 1,613 bytes +1,361 No edit summary

24 June 2006

• curprev 19:2719:27, 24 June 2006 ComplexZeta talk contribs 252 bytes +6 No need for convexity here

21 June 2006

• curprev 13:3913:39, 21 June 2006 Inscrutableroot talk contribs m 246 bytes −1 proofreading
• curprev 12:1612:16, 21 June 2006 Puuhikki talk contribs m 247 bytes +102 A link where the proof can be found

20 June 2006

• curprev 15:5215:52, 20 June 2006 Cosinator talk contribs m 145 bytes +4 A link to 'cyclic quadrilateral' in case someone doesn't know what it is.
• curprev 14:2514:25, 20 June 2006 MCrawford talk contribs m 141 bytes 0 Ptolemy inequality moved to Ptolemy's Inequality: fixed name
• curprev 14:0614:06, 20 June 2006 Puuhikki talk contribs 141 bytes +141 No edit summary