Pythagoras' Theorem
Do you know the lengths of two sides in a right angled triangle?
Do you need to calculate the length of the 3rd side?
You need Pythagoras' Theorem!
Pythagoras' Theorem says that, in a right angled triangle:
The square of the hypotenuse is equal to the sum of the squares on the other two sides.
We can write this more simply as : \(a^{2} = b^{2} + c^{2}\)