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- 20:07, 24 September 2025 (diff | hist) . . (-62) . . Projective geometry (simplest cases) (→Polar and point) (current)
- 12:39, 21 September 2025 (diff | hist) . . (+47) . . 1985 IMO Problems/Problem 5 (→Solution 4 (Sparrow solution)) (current)
- 12:36, 21 September 2025 (diff | hist) . . (+1,317) . . 1985 IMO Problems/Problem 5 (→Solution 3 (No Miquel's point))
- 12:28, 21 September 2025 (diff | hist) . . (+11) . . Sparrow’s lemmas (→IMO 1985 5 Sparrow) (current)
- 12:20, 21 September 2025 (diff | hist) . . (+1,779) . . Sparrow’s lemmas (→Russian Math Olympiad 1999)
- 12:17, 21 September 2025 (diff | hist) . . (0) . . N File:IMO 1985 5 Sparrow.png (current)
- 16:53, 19 September 2025 (diff | hist) . . (+1,111) . . Sparrow’s lemmas (→Sparrow’s Lemma 3)
- 16:48, 19 September 2025 (diff | hist) . . (0) . . N File:Sparrow 3A.png (current)
- 14:21, 18 September 2025 (diff | hist) . . (+1) . . Sparrow’s lemmas (→Russian Math Olympiad 1999)
- 14:19, 18 September 2025 (diff | hist) . . (+1,122) . . Sparrow’s lemmas (→Russian Math Olympiad 2005)
- 14:13, 18 September 2025 (diff | hist) . . (0) . . N File:Sparrow problem 3.png (current)
- 09:33, 18 September 2025 (diff | hist) . . (+1,147) . . Sparrow’s lemmas (→Russian Math Olympiad 2011)
- 09:30, 18 September 2025 (diff | hist) . . (0) . . N File:Sparrow problem 2.png (current)
- 16:20, 17 September 2025 (diff | hist) . . (+951) . . Sparrow’s lemmas (→Sparrow’s Lemma 3)
- 16:17, 17 September 2025 (diff | hist) . . (0) . . N File:Sparrow problem 1.png (current)
- 13:47, 17 September 2025 (diff | hist) . . (-37) . . Sparrow’s lemmas (→Sparrow’s Lemma 2)
- 11:13, 17 September 2025 (diff | hist) . . (+465) . . Sparrow’s lemmas (→Sparrow’s Lemma 3)
- 10:22, 17 September 2025 (diff | hist) . . (+1,279) . . Sparrow’s lemmas (→Sparrow’s Lemma 1A)
- 10:19, 17 September 2025 (diff | hist) . . (0) . . N File:Sparrow 3.png (current)
- 16:16, 16 September 2025 (diff | hist) . . (+61) . . Sparrow’s lemmas
- 16:11, 16 September 2025 (diff | hist) . . (+1,323) . . Sparrow’s lemmas (→Sparrow's Lemma 1)
- 16:04, 16 September 2025 (diff | hist) . . (0) . . N File:Sparrow 1A.png (current)
- 15:32, 16 September 2025 (diff | hist) . . (+30) . . Kepler triangle (→Bevan point’s problems) (current)
- 15:27, 16 September 2025 (diff | hist) . . (+4) . . Sparrow’s lemmas (→Sparrow's Lemma 1)
- 15:24, 16 September 2025 (diff | hist) . . (0) . . N File:Sparrow 1.png (current)
- 15:23, 16 September 2025 (diff | hist) . . (+10) . . Sparrow’s lemmas (→Lemma 1)
- 15:22, 16 September 2025 (diff | hist) . . (+979) . . N Sparrow’s lemmas (Created page with "Sparrow’s lemmas have been known to Russian Olympiad participants since at least 2016. ==Lemma 1== 300px|right Let triangle <math>ABC</math> with circumc...")
- 03:35, 16 September 2025 (diff | hist) . . (+79) . . Barycentric coordinates (→Triangle and perpendiculars) (current)
- 03:32, 16 September 2025 (diff | hist) . . (+77) . . Projective geometry (simplest cases) (→Polar and point)
- 17:10, 15 September 2025 (diff | hist) . . (-1) . . Barycentric coordinates (→Triangle and perpendiculars)
- 17:01, 15 September 2025 (diff | hist) . . (+1,073) . . Barycentric coordinates (→Triangle and perpendiculars)
- 16:45, 15 September 2025 (diff | hist) . . (0) . . N File:Perpendiculars 3.png (current)
- 16:44, 15 September 2025 (diff | hist) . . (+871) . . Barycentric coordinates (→See Also)
- 13:48, 15 September 2025 (diff | hist) . . (+357) . . Projective geometry (simplest cases) (→Polar and point)
- 13:40, 15 September 2025 (diff | hist) . . (+12) . . Projective geometry (simplest cases) (→Polar and point)
- 13:31, 15 September 2025 (diff | hist) . . (0) . . N File:Parallellines.png (current)
- 13:30, 15 September 2025 (diff | hist) . . (+1,450) . . Projective geometry (simplest cases) (→Polar and point)
- 13:25, 15 September 2025 (diff | hist) . . (0) . . N File:Polar and point.png (current)
- 12:26, 15 September 2025 (diff | hist) . . (+55) . . Projective geometry (simplest cases) (→Polar and point)
- 12:21, 15 September 2025 (diff | hist) . . (0) . . N File:Three circles.png (current)
- 12:19, 15 September 2025 (diff | hist) . . (+732) . . Projective geometry (simplest cases) (→Polar and point)
- 12:15, 15 September 2025 (diff | hist) . . (0) . . N File:3 perpendiculars.png (current)
- 12:14, 15 September 2025 (diff | hist) . . (+1,266) . . Projective geometry (simplest cases) (→Triangle and line)
- 12:11, 15 September 2025 (diff | hist) . . (-31) . . Projective geometry (simplest cases) (→Six segments)
- 12:10, 15 September 2025 (diff | hist) . . (+13) . . Projective geometry (simplest cases) (→Six segments)
- 12:09, 15 September 2025 (diff | hist) . . (-46) . . Projective geometry (simplest cases) (→Medians crosspoint)
- 12:09, 15 September 2025 (diff | hist) . . (+14) . . Projective geometry (simplest cases) (→Medians crosspoint)
- 12:07, 15 September 2025 (diff | hist) . . (-31) . . Projective geometry (simplest cases) (→Complete quadrilateral theorem)
- 12:06, 15 September 2025 (diff | hist) . . (-29) . . Projective geometry (simplest cases) (→Convex quadrilateral and point)
- 12:05, 15 September 2025 (diff | hist) . . (+15) . . Projective geometry (simplest cases) (→Crossing lines)
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