# Garfield's Proof of the Pythagorean Theorem

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This Demonstration shows President James Garfield's elegant proof of the Pythagorean theorem.

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Contributed by: Alvaro José Ibarra Rivas (March 2013)

Open content licensed under CC BY-NC-SA

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James Abram Garfield (1831–1881), the twentieth president of the United States, published this proof in the *New England Journal of Education*.

Reference

[1] S. Klebe, "Garfield, the Pythagorean Theorem, and the Fight for Universal Education,"* Executive Intelligence Review*, 22(9), 1995 pp. 50–51. www.larouchepub.com/eiw/public/1995/eirv22n09-19950224/eirv22n09-19950224_050-garfield_the_pythagorean_theorem.pdf.

## Permanent Citation