Pythagoras' Theorem
In any right-angled triangle the square on the hypotenuse is equal to the sum of the squares on the other two sides.
To prove Pythagoras was right,

With new found ease

and much delight.

Lets say hypotenuse is c,

With one leg a and the other b.

On c we draw a leg with pride,

Then triangles on every side.

The square of (a+b) you see,

Is c squared plus two times ab.

Equate and cancel 2ab,

And we have reached the QED!


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