# Dintzl's Law of Cosines Dissection

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This Demonstration gives Dintzl's dissection proof of the law of cosines: , .

Contributed by: Izidor Hafner (March 2011)

Based on work by: Greg N. Frederickson

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

G. N. Frederickson, *Dissections: Plane & Fancy*, New York: Cambridge Univ. Press, 1997 pp. 39.

## Permanent Citation

"Dintzl's Law of Cosines Dissection"

http://demonstrations.wolfram.com/DintzlsLawOfCosinesDissection/

Wolfram Demonstrations Project

Published: March 7 2011