# Pythagorean theorem/Related Articles

From Citizendium, the Citizens' Compendium

*See also changes related to Pythagorean theorem, or pages that link to Pythagorean theorem or to this page or whose text contains "Pythagorean theorem".*

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- Biot-Savart's law [r]:
*Add brief definition or description* - Euclid's Elements [r]: Mathematical and geometric treatise consisting of 13 books written by the Greek mathematician Euclid in Alexandria circa 300 BC.
^{[e]} - Irrational number [r]: A real number that cannot be expressed as a fraction, m / n, in which m and n are integers.
^{[e]} - James Garfield [r]: The 20th President of the United States, serving in 1881, and a Republican U.S. Congressman from Ohio.
^{[e]} - Law of cosines [r]: Mathematical statement about a general triangle which relates the lengths of its sides to the cosine of one of its angles.
^{[e]} - Mathematics [r]: The study of quantities, structures, their relations, and changes thereof.
^{[e]} - Pythagoras [r]: Greek mathematician and thinker of the 6th century BCE.
^{[e]} - Rectangle [r]: A four-sided plane figure with four right angles.
^{[e]} - Sine [r]: In a right triangle, the ratio of the length of the side opposite an acute angle (less than 90 degrees) and the length of the hypotenuse.
^{[e]} - Square [r]:
*Please do not use this term in your topic list, because there is no single article for it. Please substitute a more precise term. See Square (disambiguation) for a list of available, more precise, topics. Please add a new usage if needed.* - Trigonometric function [r]: Function of an angle expressed as the ratio of two of the sides of a right triangle that contains that angle; the sine, cosine, tangent, cotangent, secant, and cosecant.
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