written by
Alexander Bogomolny
This webpage provides facts and a short explanation of the Pythagorean Theorem before continuing on to more than 90 ways to prove it. Many of the proofs are accompanied by Java simulations.
Historical background on the discovery and use of the Pythagorean Theorem is also provided.
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![]() <a href="https://www.compadre.org/portal/items/detail.cfm?ID=9123">Bogomolny, Alexander. Pythagorean Theorem and its many proofs. 1996.</a>
![]() A. Bogomolny, (1996), WWW Document, (http://www.cut-the-knot.org/pythagoras/index.shtml).
![]() A. Bogomolny, Pythagorean Theorem and its many proofs (1996), <http://www.cut-the-knot.org/pythagoras/index.shtml>.
![]() Bogomolny, A. (1996). Pythagorean Theorem and its many proofs. Retrieved May 2, 2025, from http://www.cut-the-knot.org/pythagoras/index.shtml
![]() Bogomolny, Alexander. Pythagorean Theorem and its many proofs. 1996. http://www.cut-the-knot.org/pythagoras/index.shtml (accessed 2 May 2025).
![]() Bogomolny, Alexander. Pythagorean Theorem and its many proofs. 1996. 2 May 2025 <http://www.cut-the-knot.org/pythagoras/index.shtml>.
![]() @misc{
Author = "Alexander Bogomolny",
Title = {Pythagorean Theorem and its many proofs},
Volume = {2025},
Number = {2 May 2025},
Year = {1996}
}
![]() %A Alexander Bogomolny %T Pythagorean Theorem and its many proofs %D 1996 %U http://www.cut-the-knot.org/pythagoras/index.shtml %O text/html ![]() %0 Electronic Source %A Bogomolny, Alexander %D 1996 %T Pythagorean Theorem and its many proofs %V 2025 %N 2 May 2025 %9 text/html %U http://www.cut-the-knot.org/pythagoras/index.shtml Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
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