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Resources Aops Wiki 2021 Fall AMC 10B Problems/Problem 18: Revision history

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2021 Fall AMC 10B Problems/Problem 18: Revision history

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12 October 2025

curprev 01:0501:05, 12 October 2025 Voidling talk contribs 21,382 bytes +2,163 Added Solution 8

13 September 2025

curprev 15:2015:20, 13 September 2025 Flyingkinder123 talk contribs m 19,219 bytes +42 →Solution 5

15 February 2025

curprev 17:4317:43, 15 February 2025 Charking talk contribs m 19,177 bytes −23 →Video Solution 1 by Power of Logic

23 July 2024

curprev 21:2321:23, 23 July 2024 Xhypotenuse talk contribs 19,200 bytes +900 No edit summary

26 September 2023

curprev 21:0521:05, 26 September 2023 Mrthinker talk contribs 18,300 bytes −65 →Video Solution 4 (elementary solution with no trigonometry)

29 December 2022

curprev 23:5223:52, 29 December 2022 Icematrix talk contribs m 18,365 bytes +80 No edit summary

17 November 2022

curprev 13:2613:26, 17 November 2022 Kingravi talk contribs 18,285 bytes +284 →Solution 1 (15-75-90 triangles)
curprev 13:2413:24, 17 November 2022 Kingravi talk contribs 18,001 bytes +23 →Solution 1 (15-75-90 triangles)
curprev 13:2313:23, 17 November 2022 Kingravi talk contribs 17,978 bytes −1 →Solution 1 (15-75-90 triangles)
curprev 13:2113:21, 17 November 2022 Kingravi talk contribs 17,979 bytes +126 →Solution 1 (15-75-90 triangles)
curprev 04:0004:00, 17 November 2022 Pikapi talk contribs 17,853 bytes +42 →Video Solution 4
curprev 02:5902:59, 17 November 2022 Pikapi talk contribs 17,811 bytes +82 →Video Solution 3 by WhyMath

16 November 2022

curprev 15:0415:04, 16 November 2022 Kingravi talk contribs 17,729 bytes +251 →Solution 1 (15-75-90 triangles)
curprev 12:1112:11, 16 November 2022 Kingravi talk contribs 17,478 bytes +315 →Solution 1 (15-75-90 triangles)
curprev 12:0912:09, 16 November 2022 Kingravi talk contribs 17,163 bytes +44 →Solution 1 (15-75-90 triangles)
curprev 12:0012:00, 16 November 2022 Kingravi talk contribs 17,119 bytes +12 →Solution 1 (15-75-90 triangles)
curprev 12:0012:00, 16 November 2022 Kingravi talk contribs 17,107 bytes +274 →Solution 1 (15-75-90 triangles)
curprev 11:5011:50, 16 November 2022 Kingravi talk contribs 16,833 bytes +1 →Solution 1 (15-75-90 triangles)
curprev 11:4911:49, 16 November 2022 Kingravi talk contribs 16,832 bytes +373 →Solution 1 (15-75-90 triangles)
curprev 11:4511:45, 16 November 2022 Kingravi talk contribs 16,459 bytes +103 →Solution 1 (15-75-90 triangles)
curprev 11:3911:39, 16 November 2022 Kingravi talk contribs 16,356 bytes +4 →Solution 1 (15-75-90 triangles)
curprev 11:3911:39, 16 November 2022 Kingravi talk contribs 16,352 bytes +179 →Solution 1 (15-75-90 triangles)
curprev 11:3711:37, 16 November 2022 Kingravi talk contribs 16,173 bytes +26 →Solution 1 (15-75-90 triangles)
curprev 11:3611:36, 16 November 2022 Kingravi talk contribs 16,147 bytes +2 →Solution 1 (15-75-90 triangles)
curprev 11:3511:35, 16 November 2022 Kingravi talk contribs 16,145 bytes 0 →Solution 1 (15-75-90 triangles)
curprev 11:3511:35, 16 November 2022 Kingravi talk contribs 16,145 bytes +33 →Solution 1 (15-75-90 triangles)
curprev 11:3411:34, 16 November 2022 Kingravi talk contribs 16,112 bytes +24 →Solution 1 (15-75-90 triangles)
curprev 11:3311:33, 16 November 2022 Kingravi talk contribs 16,088 bytes +2 →Solution 1 (15-75-90 triangles)
curprev 11:3211:32, 16 November 2022 Kingravi talk contribs 16,086 bytes −8 →Solution 1 (15-75-90 triangles)
curprev 11:3211:32, 16 November 2022 Kingravi talk contribs 16,094 bytes −1 →Solution 1 (15-75-90 triangles)
curprev 11:3111:31, 16 November 2022 Kingravi talk contribs 16,095 bytes 0 →Solution 1 (15-75-90 triangles)
curprev 11:3111:31, 16 November 2022 Kingravi talk contribs 16,095 bytes +39 →Solution 1 (15-75-90 triangles)
curprev 11:2911:29, 16 November 2022 Kingravi talk contribs 16,056 bytes +19 →Solution 1 (15-75-90 triangles)
curprev 11:2811:28, 16 November 2022 Kingravi talk contribs 16,037 bytes −17 →Solution 1 (15-75-90 triangles)
curprev 11:2811:28, 16 November 2022 Kingravi talk contribs 16,054 bytes +227 →Solution 1 (15-75-90 triangles)
curprev 11:2511:25, 16 November 2022 Kingravi talk contribs 15,827 bytes 0 →Solution 1 (15-75-90 triangles)
curprev 11:2511:25, 16 November 2022 Kingravi talk contribs 15,827 bytes 0 →Solution 1 (15-75-90 triangles)
curprev 11:2411:24, 16 November 2022 Kingravi talk contribs 15,827 bytes +149 →Solution 1 (15-75-90 triangles)
curprev 11:1811:18, 16 November 2022 Kingravi talk contribs 15,678 bytes +498 →Solution 1 (15-75-90 triangles)
curprev 11:1411:14, 16 November 2022 Kingravi talk contribs 15,180 bytes −92 →Solution 1 (15-75-90 triangles)
curprev 11:1311:13, 16 November 2022 Kingravi talk contribs 15,272 bytes +130 →Solution 1 (15-75-90 triangles)
curprev 11:1211:12, 16 November 2022 Kingravi talk contribs 15,142 bytes +19 →Solution 1 (15-75-90 triangles)
curprev 11:1111:11, 16 November 2022 Kingravi talk contribs 15,123 bytes +94 →Solution 1 (15-75-90 triangles)
curprev 11:0511:05, 16 November 2022 Kingravi talk contribs 15,029 bytes −3 →Solution 1 (15-75-90 triangles)
curprev 11:0511:05, 16 November 2022 Kingravi talk contribs 15,032 bytes +244 →Solution 1 (15-75-90 triangles)
curprev 10:5910:59, 16 November 2022 Kingravi talk contribs 14,788 bytes +264 →Solution 1 (15-75-90 triangles)
curprev 10:5810:58, 16 November 2022 Kingravi talk contribs 14,524 bytes −1 →Solution 1 (15-75-90 triangles)
curprev 10:5810:58, 16 November 2022 Kingravi talk contribs 14,525 bytes 0 →Solution 1 (15-75-90 triangles)
curprev 10:5710:57, 16 November 2022 Kingravi talk contribs 14,525 bytes +1 →Solution 1 (15-75-90 triangles)
curprev 10:5710:57, 16 November 2022 Kingravi talk contribs 14,524 bytes +2 →Solution 1 (15-75-90 triangles)

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