Polygonal Numbers

Last updated: 15/11/2023
Contributor: David Benjamin 🐝
Polygonal Numbers
Main Subject
Key stage
Category
Number: Types of number
Resource type
Student activity

An investigation into the numbers and patterns in the sequences of polygonal numbers, starting with triangular and square numbers, then pentagonal and hexagonal. Includes use of the formulae for polygonal numbers.

An extension asks students so make integers from the sums of polygonal numbers, based on a statement by Fermat.

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