102.31 Cyclic gridpoint polygons

Paul Stephenson
  • The Mathematical Gazette, June 2018, Cambridge University Press
  • DOI: 10.1017/mag.2018.73

Proving geometrically that pi is irrational.

What is it about?

The idea is to show that, however large the circle, we shall always have to add extra grid points to define the circumference.

Why is it important?

The point of the piece is to show geometrically what is usually shown by other means.


Paul Stephenson (Author)

The Mathematical Gazette, in which the piece appears, has a section 'Teaching notes', in which students can often find a different angle on standard topics.

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