Varignon's theorem: Revision history

7 August 2024

• curprev 12:0212:02, 7 August 2024 Dimitris131 talk contribs m 10,408 bytes +1 →References and further reading: Update link undo

8 June 2024

• curprev 21:0521:05, 8 June 2024 Kevin Lamoreau talk contribs 10,407 bytes −75 Undid revision 1227982247 by Kevin Lamoreau (talk) my last edit didn't come out the way I meant it to undo Tag: Undo
• curprev 21:0321:03, 8 June 2024 Kevin Lamoreau talk contribs 10,482 bytes +75 Re: the "proof without words", a suggested improvement to an already nice explanation (I won't protest a revert, or perhaps some of my changes will be kept but not others) to (a) use more consistent mathematical language once you get to the area variables (largely to make (b) easier) and (b) to tie things together a bit more clearly. undo Tag: Reverted

29 October 2023

• curprev 17:0617:06, 29 October 2023 DinosaursLoveExistence talk contribs m 10,407 bytes +44 →External links: Category undo

20 July 2023

• curprev 17:5017:50, 20 July 2023 Jacobolus talk contribs 10,363 bytes −28 directly put the statement into the lead section; it's not worth saying "it is a statement" etc. without just stating it. undo

30 January 2023

• curprev 01:0901:09, 30 January 2023 OAbot talk contribs m 10,391 bytes +21 Open access bot: doi added to citation with #oabot. undo

5 October 2022

• curprev 23:1923:19, 5 October 2022 Nihiltres talk contribs 10,370 bytes −5 →Proof: Formatted list as list in image caption undo

14 August 2022

• curprev 02:0702:07, 14 August 2022 2602:302:d1b1:c770:e120:1fcc:881c:bf46 talk 10,375 bytes +64 →See also undo

23 December 2021

• curprev 20:2620:26, 23 December 2021 132.62.172.114 talk 10,311 bytes −10 →Properties: simplify undo

4 December 2021

• curprev 01:3701:37, 4 December 2021 David Eppstein talk contribs 10,321 bytes +553 →Special cases: antiparallelogram undo

5 March 2021

• curprev 21:5021:50, 5 March 2021 Joel Brennan talk contribs m 9,768 bytes +54 formatting undo

14 November 2020

• curprev 21:4621:46, 14 November 2020 Wcherowi talk contribs 9,714 bytes +40 added citation that was causing a technical problem undo

13 November 2020

• curprev 15:3715:37, 13 November 2020 Geometryfan talk contribs m 9,674 bytes +1 →Special cases: Reverted back as I do not know how to correctly ad another reference undo Tag: Manual revert
• curprev 15:3415:34, 13 November 2020 Geometryfan talk contribs m 9,673 bytes −31 →Special cases: Reverted bscl to to original as I do not know how to correctly add Reference 7, p. 169 undo Tag: Reverted
• curprev 15:3315:33, 13 November 2020 Geometryfan talk contribs m 9,704 bytes +10 →Special cases undo Tag: Reverted
• curprev 15:3115:31, 13 November 2020 Geometryfan talk contribs m 9,694 bytes −17 →Special cases undo Tag: Reverted
• curprev 15:3015:30, 13 November 2020 Geometryfan talk contribs m 9,711 bytes +37 →Special cases: added a reference which also mentions the result about a Varignon parallelogram being a rectangle i and only if the quadrilateral is orhodiagonal undo Tag: Reverted
• curprev 15:1615:16, 13 November 2020 Geometryfan talk contribs m 9,674 bytes 0 →External links: Just corrected a URL to an updated one undo

11 November 2020

• curprev 02:5502:55, 11 November 2020 Fuzheado talk contribs m 9,674 bytes +1 Reverted edits by 2001:8003:AC78:1100:B4E7:1355:26F4:B2D3 (talk) (HG) (3.4.10) undo Tag: Rollback
• curprev 02:5502:55, 11 November 2020 2001:8003:ac78:1100:b4e7:1355:26f4:b2d3 talk 9,673 bytes −1 No edit summary undo Tags: Manual revert Reverted
• curprev 02:5402:54, 11 November 2020 2001:8003:ac78:1100:b4e7:1355:26f4:b2d3 talk 9,674 bytes +1 No edit summary undo Tag: Reverted
• curprev 02:5302:53, 11 November 2020 2001:8003:ac78:1100:b4e7:1355:26f4:b2d3 talk 9,673 bytes −1 No edit summary undo Tag: Reverted

2 November 2020

• curprev 16:3216:32, 2 November 2020 Tarnoob talk contribs 9,674 bytes −25 →External links: cat. undo

24 September 2020

• curprev 20:2720:27, 24 September 2020 Cmglee talk contribs 9,699 bytes +719 →Proof: Add Proof without words undo

20 May 2020

• curprev 02:0902:09, 20 May 2020 ArnoldReinhold talk contribs 8,980 bytes +100 Adding short description: "The midpoints of the sides of an arbitrary quadrilateral form a parallelogram" (Shortdesc helper) undo

27 February 2020

• curprev 03:0803:08, 27 February 2020 73.71.82.162 talk 8,880 bytes −107 →Proof: Put an actual understandable proof first. undo

20 February 2020

• curprev 21:4421:44, 20 February 2020 Wcherowi talk contribs 8,987 bytes +30 More clarification undo
• curprev 18:4018:40, 20 February 2020 82.181.68.77 talk 8,957 bytes +1 Corrected that the theorem was indeed published 1731, but not by Varigon himself. undo

24 December 2019

• curprev 23:2423:24, 24 December 2019 109.166.134.81 talk 8,956 bytes −10 →Proof: ce undo

16 November 2019

• curprev 08:3708:37, 16 November 2019 David Eppstein talk contribs 8,966 bytes +6 Category:Theorems in plane geometry undo

17 May 2018

• curprev 10:5310:53, 17 May 2018 Professor Proof talk contribs m 8,960 bytes −52 →Theorem: fixed inconsistent terminology and broken wikilinks undo Tag: 2017 wikitext editor

27 February 2018

• curprev 13:5713:57, 27 February 2018 42.109.62.144 talk 9,012 bytes −2 Fixed typo. undo Tags: Mobile edit Mobile web edit

24 September 2017

• curprev 03:4303:43, 24 September 2017 Wcherowi talk contribs m 9,014 bytes −97 Reverted 1 edit by 223.237.58.237 (talk) to last revision by Loraof. (TW) undo

22 September 2017

• curprev 13:5113:51, 22 September 2017 223.237.58.237 talk 9,111 bytes +97 Definition undo Tags: Visual edit Mobile edit Mobile web edit

26 October 2016

• curprev 20:4420:44, 26 October 2016 Loraof talk contribs 9,014 bytes +16 →Special cases: tweak for clarity undo
• curprev 20:4320:43, 26 October 2016 Loraof talk contribs 8,998 bytes −30 →Special cases: not true undo
• curprev 15:3615:36, 26 October 2016 Kmhkmh talk contribs 9,028 bytes −35 →Special cases: this is sort of obvious from the construction and does really require a literature citation undo
• curprev 11:5711:57, 26 October 2016 Bender the Bot talk contribs m 9,063 bytes +1 →Special cases: http→https for Google Books and Google News using AWB undo
• curprev 04:1504:15, 26 October 2016 Kmhkmh talk contribs 9,062 bytes +682 →External links undo

25 October 2016

• curprev 15:3515:35, 25 October 2016 Loraof talk contribs 8,380 bytes −8 →Theorem: ce undo

16 October 2016

• curprev 16:3916:39, 16 October 2016 Michael Hardy talk contribs m 8,388 bytes +4 →Theorem undo
• curprev 08:5208:52, 16 October 2016 Extra999 talk contribs 8,384 bytes +132 →Proof: clarified undo

10 July 2016

• curprev 06:3606:36, 10 July 2016 Circlesareround talk contribs 8,252 bytes −334 moved proof to after theorem, removed double references undo

7 April 2016

• curprev 12:3512:35, 7 April 2016 WillemienH talk contribs m 8,586 bytes +8 →Theorem: dab correction undo

6 April 2016

• curprev 09:4509:45, 6 April 2016 WillemienH talk contribs 8,578 bytes +76 bit rewrite undo

5 April 2016

• curprev 14:0414:04, 5 April 2016 Kmhkmh talk contribs 8,502 bytes +56 No edit summary undo
• curprev 11:2911:29, 5 April 2016 WillemienH talk contribs 8,446 bytes +3,299 new section properties (copied from quadrilateral#bimedian ) undo

4 July 2015

• curprev 16:1316:13, 4 July 2015 Jochen Burghardt talk contribs 5,147 bytes +21 →External links: commons cat. undo

10 May 2015

• curprev 02:2602:26, 10 May 2015 Tomruen talk contribs 5,126 bytes −4 quadrilateral undo

12 April 2015

• curprev 14:2214:22, 12 April 2015 GTrang talk contribs 5,130 bytes +35 →Special cases undo