25 August 2025

• curprev 20:5920:59, 25 August 2025 Inanenotinsane talk contribs m 8,014 bytes +13 →Solution 1

3 July 2025

• curprev 15:3015:30, 3 July 2025 Yixin.picses talk contribs 8,001 bytes 0 →Solution 3 (Burnside)

12 October 2024

• curprev 14:0014:00, 12 October 2024 Enichols talk contribs m 8,001 bytes 0 →Solution 3 (Burnside)

20 September 2024

• curprev 00:3200:32, 20 September 2024 Yiyj1 talk contribs m 8,001 bytes 0 Fixed link

23 January 2021

• curprev 02:3302:33, 23 January 2021 Apple3.14159 talk contribs 8,001 bytes +1 →Solution 3 (Burnside)
• curprev 02:3302:33, 23 January 2021 Apple3.14159 talk contribs 8,000 bytes +99 →Solution 3 (Burnside)

7 January 2021

• curprev 20:3720:37, 7 January 2021 Sugar rush talk contribs 7,901 bytes −2 No edit summary

6 January 2021

• curprev 12:0512:05, 6 January 2021 Iamthehazard talk contribs 7,903 bytes +1,557 No edit summary

4 August 2020

• curprev 11:4211:42, 4 August 2020 Jjmath123 talk contribs m 6,346 bytes +6 →Solution 2
• curprev 11:4211:42, 4 August 2020 Jjmath123 talk contribs m 6,340 bytes −132 →Solution 2
• curprev 11:3611:36, 4 August 2020 Jjmath123 talk contribs m 6,472 bytes +53 →Solution 2
• curprev 11:3011:30, 4 August 2020 Jjmath123 talk contribs 6,419 bytes −6 Clarifications and cleanup
• curprev 10:2310:23, 4 August 2020 Jjmath123 talk contribs m 6,425 bytes +21 →Solution 1
• curprev 10:2110:21, 4 August 2020 Jjmath123 talk contribs m 6,404 bytes +20 →Solution 1
• curprev 10:1510:15, 4 August 2020 Jjmath123 talk contribs m 6,384 bytes +5 →Solution 1
• curprev 10:1410:14, 4 August 2020 Jjmath123 talk contribs 6,379 bytes +850 Added proof to initial claim in Solution 1

3 July 2013

• curprev 20:4920:49, 3 July 2013 Nathan wailes talk contribs 5,529 bytes +15 →See also

5 February 2012

• curprev 09:5609:56, 5 February 2012 Duohead talk contribs 5,514 bytes +1,664 →Solution

12 November 2011

• curprev 20:3220:32, 12 November 2011 Tomaschoi talk contribs 3,850 bytes −1 →Solution

25 February 2010

• curprev 22:3622:36, 25 February 2010 Azjps talk contribs m 3,851 bytes +120 Semi-automated contest formatting - script by azjps

12 February 2010

• curprev 17:4517:45, 12 February 2010 Stargroup talk contribs 3,731 bytes +3,731 Created page with '== Problem 25 == Two quadrilaterals are considered the same if one can be obtained from the other by a rotation and a translation. How many different convex cyclic quadrilaterals…'