Keywords: Chinese pythagoras.jpg PD-old Source Chinese Pythagorean theorem from page 22 of Joseph Needham's Science and Civilization in China Volume 3 Mathematics and the Sciences of the Heavens and the Earth published in 1986 by Cave Books Ltd based in Taipei with permission from Cambridge University Press isbn 0521058015 <br>Visual proof for the 3 4 5 triangle as in the Chou Pei Suan Ching 500 200 BC <br>Left sentence 勾股幂合以成弦幂 gōu gǔ mì hé yǐ chéng xián mì <br>Translation The sum of the squares of lengths of altitude and base is the hypotenuse's length squared derivative works Chineese Pythagorean theorem 2 PNG Pythagorean theorem Proof without words |