Free in the app
Theorem of Pythagoras
Leaving Cert Maths · Geometry and Trigonometry
Ordinary Level
In a right angled triangle, the square of the hypotenuse equals the sum of the squares of the other two sides, so a² + b² = c².
Maths is free in H1 Owl, Higher and Ordinary, with no daily limit.
More Geometry and Trigonometry terms
Get the free study guide
H1 Owl is now on the App Store: download it for iPhone. Sign up here and get The Leaving Cert Maths Game Plan, our free PDF study guide, straight away, plus occasional study tips.
Occasional emails, no spam. Under 16? Ask a parent to sign up for you.
Where next
All Maths terms
The whole Leaving Cert Maths glossary, grouped by strand and labelled by level.
Browse MathsQuestion of the day
One real Higher Level Maths question, new every day, with the explanation.
Answer today'sThe app
1,700+ original questions across Maths, Biology, Chemistry and Physics. Maths is free.
See the app