%0 Journal Article %T If 1+1=2 then the Pythagorean theorem holds, or one more proof of the oldest theorem of mathematics %A Alexandru HORV¨¢TH %J Scientific Bulletin of the ''Petru Maior" University of T£¿rgu Mure£¿ %D 2013 %I Editura Universit??ii "Petru Maior" %X The Pythagorean theorem is one of the oldest theorems of mathematics. It gained during the time a central position and even today it continues to be a source of inspiration. In this note we try to give a proof which is based on a hopefully new approach. Our treatment will be as intuitive as it can be. %U Pythagorean theorem; geometric transformation; Euclidean geometry MSC 2000: 51M04, 51M05, 51N20