Pythagoras' Theorem

Do you know the lengths of 2 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.

Right angled triangle. The bottom line is c, the vertical line is b, and the hypotenuse is a. Each line has a square coming off it, with b squared etc labelled in them.

We can write this more simply as a²= b²+ c²:

A right angled triangle. The hypotenuse is line a, the vertical is line b, and the bottom is line c. At the top is an equation saying a squared equals b squared plus c squared

You will find Pythagoras' Theorem on page 2 of your General Paper.

Look out for it!

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