Satz des Pythagoras
Look at proof of the Pythagorean Theorem
Slowly turn the rectangular triangle and observe proof of the validity of the Pythagorean theorem. This may be the most famous mathematical theorem of all times. It was discovered in the 6th century BC by the Greek philosopher and mathematician Pythagoras. “The sum of the areas of the two squares of the legs (two shorter sidesaandb) equals the area of the square on the hypotenuse (longer sidec),” do you remember? Only few people know that the theorem is not valid only for squares but for any general regular polygon on the sides.
