Bitesize has changed! We're updating subjects as fast as we can. Visit our new site to find Bitesize guides and clips - and tell us what you think!

Did you know?

We also have Bitesize study guides covering many subjects at National 4 and National 5 on our Knowledge & Learning BETA website.

Home > Maths I > Measure and Shape > Pythagoras

Maths I


Writing an equation using Pythagoras' Theorem

Use Pythagoras' Theorem to write equations for the triangles below

Always start with the hypotenuse squared

A diagram of an orange triangle with each side labled a b c. the horizontal side is labled a, the vertical side is labled c and the hypotenuse is labled a.

\;a^2 = b^2 + c^2


A right angled triangle. The hypotenuse is labelled e, the horizontal edge is d, and the vertical edge is f.

e^2 = d^2 + f^2

A right angled triangle tilted. The hypotenuse is labelled m, the bottom edge is t, an the shortest edge is s.

m^2 = s^2 + t^2

If you managed to get the equations correct, well done! You have made a great start. Now we are ready for the more interesting parts.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.