If the square of the day added to the square of the month equals the square of the last two digits of the year then it's a Pythagorean Day.Example: 24th July 2025 (24² + 7² = 25²)
Short clip from QI: Stephen Fry demonstrates Pythagoras' theorem.Try It!
Arrange the measurements next to the sides of the triangles so that each diagram is correct according to Pythagoras' Theorem.Try It!
An online exercise to test your understanding of and ability to apply Pythagoras' Theorem.Try It!
Have a look at the main Pythagoras Topic page for links to many more activities including Starters, videos and games.Go!