A pizza can be cut into 11 equal pieces using only 4 straight cuts, and more generally, n straight cuts can divide a circle into up to (n²+n+2)/2 pieces—far more than the 2n pieces most people expect.
Sources
- https://en.wikipedia.org/wiki/Lazy_caterer's_sequence (en.wikipedia.org)
- https://mathworld.wolfram.com/CircleDivisionbyLines.html (mathworld.wolfram.com)
- https://www.geeksforgeeks.org/aptitude/puzzle-maximum-pieces-that-can-be-cut-from-a-circle-using-6-straight-lines/ (geeksforgeeks.org)
- https://brainly.com/question/41461922 (brainly.com)
- https://www.quora.com/How-many-maximum-pieces-a-circle-can-be-cut-with-n-cuts (quora.com)
- https://arxiv.org/pdf/1712.04026 (arxiv.org)
- https://tomrocksmaths.com/wp-content/uploads/2021/05/teddyrockshenrikhelsen.pdf (tomrocksmaths.com)
- http://campuscoke.blogspot.com/2015/01/maximum-number-of-slices-can-you-obtain.html (campuscoke.blogspot.com)
- http://www.murderousmaths.co.uk/teacher/pizza.htm (murderousmaths.co.uk)