| | Proofs of the Pythagorean Theorem (cut-the-knot.org) |
| 2 points by sonabinu 3 months ago | past |
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| | Pi in Pascal's Triangle (2014) (cut-the-knot.org) |
| 68 points by senfiaj 5 months ago | past | 14 comments |
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| | 12 Coins in Verse: Genius solution of twelve balls and a scale problem (cut-the-knot.org) |
| 31 points by vismit2000 on Aug 7, 2024 | past | 5 comments |
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| | A seventh-grader student found a beautiful proof to Thales' Theorem (2002) (cut-the-knot.org) |
| 139 points by samdung on May 30, 2024 | past | 95 comments |
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| | Cut the Knot Math (cut-the-knot.org) |
| 1 point by max_ on Sept 9, 2023 | past |
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| | Pythagorean Theorem via Geometric Progression (cut-the-knot.org) |
| 1 point by soegaard on April 9, 2023 | past | 1 comment |
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| | Cut the Knot: Interactive Mathematics Miscellany and Puzzles (cut-the-knot.org) |
| 5 points by wsc981 on Oct 12, 2021 | past |
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| | Interactive Mathematics Miscellany and Puzzles (cut-the-knot.org) |
| 2 points by simonebrunozzi on Nov 19, 2020 | past |
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| | Interactive Mathematics Miscellany and Puzzles (cut-the-knot.org) |
| 1 point by sharjeelsayed on Feb 13, 2020 | past |
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| | Math Lingo vs. Plain English: Double Entendre (1997) (cut-the-knot.org) |
| 13 points by merraksh on Dec 12, 2018 | past | 4 comments |
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| | Strategy and Tactics in Problem Solving (cut-the-knot.org) |
| 22 points by tzhenghao on April 24, 2018 | past |
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| | Two Balls Out of Four (cut-the-knot.org) |
| 1 point by gajju3588 on April 16, 2018 | past |
|
| | Pythagorean Theorem for the Reciprocals (cut-the-knot.org) |
| 1 point by amelius on March 16, 2018 | past |
|
| | Pi Day: The Spigot Algorithm (cut-the-knot.org) |
| 1 point by herodotus on March 14, 2018 | past |
|
| | Lamé's Theorem – the very first application of Fibonacci numbers (cut-the-knot.org) |
| 2 points by gbacon on Dec 26, 2017 | past |
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| | Pythagorean Theorem (cut-the-knot.org) |
| 2 points by ptrptr on April 24, 2017 | past |
|
| | Sylvester's Problem, a Second Look (cut-the-knot.org) |
| 1 point by hardmath123 on March 9, 2017 | past |
|
| | Stern-Brocot Tree (cut-the-knot.org) |
| 2 points by espeed on Jan 2, 2017 | past |
|
| | Pythagorean Theorem and its many proofs (cut-the-knot.org) |
| 60 points by tomkwok on July 19, 2015 | past | 4 comments |
|
| | Perrin Sequence (cut-the-knot.org) |
| 7 points by ColinWright on Feb 18, 2015 | past | 6 comments |
|
| | Rediscovering Mathematics: You Do the Math (review) (cut-the-knot.org) |
| 1 point by ColinWright on Feb 11, 2013 | past |
|
| | The Pythagorean Theorem is Equivalent to the Parallel Postulate (cut-the-knot.org) |
| 2 points by tokenadult on Dec 6, 2012 | past |
|
| | Thales' Theorem (cut-the-knot.org) |
| 2 points by tokenadult on Dec 3, 2012 | past |
|
| | A System of Equations Begging for Generalization (cut-the-knot.org) |
| 2 points by vectorbunny on Oct 5, 2012 | past |
|
| | A Real Life Story about factoring polynomials (cut-the-knot.org) |
| 1 point by ColinWright on Sept 30, 2012 | past |
|
| | Plane Filling Curves (cut-the-knot.org) |
| 1 point by llambda on April 26, 2012 | past |
|
| | Probability Paradoxes (cut-the-knot.org) |
| 5 points by llambda on April 21, 2012 | past | 2 comments |
|
| | Surreal Numbers (cut-the-knot.org) |
| 4 points by ColinWright on March 21, 2012 | past |
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| | Finicky Diophantine Equations (cut-the-knot.org) |
| 3 points by ColinWright on Nov 1, 2011 | past |
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| | A brief introduction to Rational Trigonometry (cut-the-knot.org) |
| 4 points by ColinWright on Sept 11, 2011 | past |
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| More |
