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- Square_root_of_2 abstract ""Pythagoras's constant" redirects here; not to be confused with Pythagoras numberThe square root of 2, often known as root 2, radical 2, or Pythagoras' constant, and written as , is the positive algebraic number that, when multiplied by itself, gives the number 2. Technically, it is called the principal square root of 2, to distinguish it from the negative number with the same property.Geometrically the square root of 2 is the length of a diagonal across a square with sides of one unit of length; this follows from the Pythagorean theorem. It was probably the first number known to be irrational.Its numerical value, truncated to 65 decimal places, is:1.41421356237309504880168872420969807856967187537694807317667973799... (sequence A002193 in OEIS). (The next digit is 0.)The quick approximation 99/70 (≈ 1.41429) for the square root of two is frequently used. Despite having a denominator of only 70, it differs from the correct value by less than 1/10,000 (approx. 7.2 × 10 −5). The approximation 665857/470832 is valid to within 1.13 x 10 -12. Its square is 2.0000000000045....".
- Square_root_of_2 thumbnail Square_root_of_2_triangle.svg?width=300.
- Square_root_of_2 wikiPageExternalLink sqrt2.html.
- Square_root_of_2 wikiPageExternalLink sq_root.shtml.
- Square_root_of_2 wikiPageExternalLink 129.
- Square_root_of_2 wikiPageExternalLink robson-fowler-square.pdf.
- Square_root_of_2 wikiPageExternalLink sulba.html.
- Square_root_of_2 wikiPageID "341682".
- Square_root_of_2 wikiPageRevisionID "606297192".
- Square_root_of_2 hasPhotoCollection Square_root_of_2.
- Square_root_of_2 title "Pythagoras's Constant".
- Square_root_of_2 urlname "PythagorassConstant".
- Square_root_of_2 subject Category:Algebraic_numbers.
- Square_root_of_2 subject Category:Articles_containing_proofs.
- Square_root_of_2 subject Category:Irrational_numbers.
- Square_root_of_2 subject Category:Mathematical_constants.
- Square_root_of_2 comment ""Pythagoras's constant" redirects here; not to be confused with Pythagoras numberThe square root of 2, often known as root 2, radical 2, or Pythagoras' constant, and written as , is the positive algebraic number that, when multiplied by itself, gives the number 2.".
- Square_root_of_2 label "2の平方根".
- Square_root_of_2 label "2的算術平方根".
- Square_root_of_2 label "Pierwiastek kwadratowy z 2".
- Square_root_of_2 label "Racine carrée de deux".
- Square_root_of_2 label "Radice quadrata di 2".
- Square_root_of_2 label "Raiz quadrada de dois".
- Square_root_of_2 label "Raíz cuadrada de dos".
- Square_root_of_2 label "Square root of 2".
- Square_root_of_2 label "Wortel 2".
- Square_root_of_2 label "Wurzel 2".
- Square_root_of_2 label "Квадратный корень из 2".
- Square_root_of_2 label "الجذر التربيعي ل 2".
- Square_root_of_2 sameAs Wurzel_2.
- Square_root_of_2 sameAs Raíz_cuadrada_de_dos.
- Square_root_of_2 sameAs Racine_carrée_de_deux.
- Square_root_of_2 sameAs Radice_quadrata_di_2.
- Square_root_of_2 sameAs 2の平方根.
- Square_root_of_2 sameAs 2의_제곱근.
- Square_root_of_2 sameAs Wortel_2.
- Square_root_of_2 sameAs Pierwiastek_kwadratowy_z_2.
- Square_root_of_2 sameAs Raiz_quadrada_de_dois.
- Square_root_of_2 sameAs m.01y523.
- Square_root_of_2 sameAs Q389813.
- Square_root_of_2 sameAs Q389813.
- Square_root_of_2 wasDerivedFrom Square_root_of_2?oldid=606297192.
- Square_root_of_2 depiction Square_root_of_2_triangle.svg.
- Square_root_of_2 isPrimaryTopicOf Square_root_of_2.
