http://en.wikipedia.org/wiki/Square_root_of_2#History Proof by unique factorization http://en.wikipedia.org/wiki/Square_root_of_2#History English Square Root of 2 Babylonian square root of 2 square root of 2 English English diagonal line, whose ratio is 99/70 Check them out geometric proof Proof by unique factorization Pythagoras or Hippasus geometric proof English the square root of 2 Proof by unique factorization en.wikipedia.org/wiki/Square_root_of_2 English Wikipedia proof http://en.wikipedia.org/wiki/Square_root_of_2#History Proof by unique factorization 2 {\displaystyle {\sqrt {2}}} Proof by unique factorization square root of 2 Proof by unique factorization Pythagoras English Raiz quadrada de 2, na Wikipedia em inglês English http://en.wikipedia.org/wiki/Square_root_of_2 en.wikipedia.org/wiki/Square_root_of_2 English Proof by unique factorization square root of 2 as a continued fraction? Pythagorean Theorem Proof en.wikipedia.org/wiki/Square_root_of_2 the square root of 2 Square root of 2 (Pythagoras Constant) en.wikipedia.org/wiki/Square_root_of_2#Constructive_proof square root of two English square root of 2 as a continued fraction? the square root of 2 English Square Root of 2 root of two 2 {\displaystyle {\sqrt {2}}} English http://en.wikipedia.org/wiki/Square_root_of_2#History Square Root of 2 http://en.wikipedia.org/wiki/Square_root_of_2#History English English square-root of two $\sqrt{2}$ is irrational square root of two http://en.wikipedia.org/wiki/Square_root_of_2 Proof by unique factorization English English Square Root of 2 Proof by unique factorization en:Square_root_of_2 diagonal line, whose ratio is 99/70 diagonal line, whose ratio is 99/70 English https://en.wikipedia.org/wiki/Square_root_of_2 square root of two image from wikipedia article Square root of 2 en.wikipedia.org/wiki/Square_root_of_2 English continued fraction for √2 en.wikipedia.org/wiki/Square_root_of_2 Square Root of 2 square root of two Pythagoras en.wikipedia.org/wiki/Square_root_of_2 image from wikipedia article The irrationality of $\sqrt{2}$ e.g. $\sqrt{2}$ square root of 2 Babylonian