Pythagora by water

http://dmentrard.free.fr/GEOGEBRA/Maths/Pythawat2MD.html
[url=http://dmentrard.free.fr/GEOGEBRA/Maths/Pythawat2MD.html]http://dmentrard.free.fr/GEOGEBRA/Maths/Pythawat2MD.html[/url]
– Daniel Mentrard

Informação: Pythagora by water