1 October 2025

• curprev 21:4421:44, 1 October 2025 Pf02 talk contribs 5,643 bytes +2,318 No edit summary
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29 January 2021

• curprev 14:5614:56, 29 January 2021 Hamstpan38825 talk contribs 3,042 bytes +54 No edit summary
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6 January 2019

• curprev 18:0718:07, 6 January 2019 Speet talk contribs 181 bytes −1,184 →Solution
• curprev 17:0417:04, 6 January 2019 Speet talk contribs 1,365 bytes +458 →Solution
• curprev 16:4716:47, 6 January 2019 Speet talk contribs 907 bytes +626 →Solution
• curprev 16:3816:38, 6 January 2019 Speet talk contribs 281 bytes +101 No edit summary

20 October 2013

• curprev 12:2312:23, 20 October 2013 Elvis talk contribs 180 bytes +180 Created page with "In the triangle ABC; prove that there is a point D on side AB such that CD is the geometric mean of AD and DB if and only if sin A sin B is less than or equal to sin²(C/2)"