Generalized Pythagoras Theorem
There are dozens of proofs for the Pythagoras theorem, here is the
one I like best.
Here is the three-dimensional version of the Pythagoras theorem.
What is the proof?
Is there an n-dimensional version of the Pythagoras theorem? There should
be! Intrigued? Want to know the anwser? Well, we cannot just talk in terms of
pictures, we need more sophisticated notations.
K. K. Nambiar