Pythagorean Theorem

For those that have studied geometry, such as my students taking their final exam today, the Pythagorean Theorem is one of the most memorable formulas:
A² + B² = C²



The great Geometer Euclid, of course, derived this Theorem in Proposition 47 of Book I of his Elements.


There is no day like today to derive the Pythagorean Theorem, right?
http://math.furman.edu/~jpoole/euclidselements/eubk1/prop47/prop47~1.htm


Euclid the Geometer in the School of Athens by Raphael.

Live well!