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All games Mathematics

Pythagoras Tower

Find missing sides in right-angled triangles to build the tower.

Play at

Free taster for Year 9 — no account needed

Ready to play?

8 questions, 40 seconds each, pitched at Year 9. You can take as long as you like — when the timer runs out the answer is simply revealed.

How to play

Decide whether you are finding the hypotenuse or a shorter side, then add or subtract the squares. Each answer adds a storey.

What this practises

  • Pythagoras' theorem
  • Squares and square roots
  • Geometric reasoning

8 questions per game, 40 seconds each. Practice only — it is not a graded assessment and is not endorsed by an exam board.

Try the demo