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100.31 Heron-like formulas for quadrilaterals

Published online by Cambridge University Press:  17 October 2016

Martin Josefsson
Martin Josefsson*
Affiliation:
Västergatan 25d, 285 37 Markaryd, Sweden e-mail: martin.markaryd@hotmail.com
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Information
The Mathematical Gazette , Volume 100 , Issue 549 , November 2016 , pp. 505 - 508
Copyright
Copyright © Mathematical Association 2016 

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References

1. Hess, A., A highway from Heron to Brahmagupta, Forum Geom. 12 (2012) pp. 191–192.Google Scholar
2. http://en.wikipedia.org/wiki/Quadrilateral, accessed January 31, 2016.Google Scholar
3. Dostor, G., Aire d'un quadrilatère quelconque, Nouvelles Annales de Mathématiques, 1re série, 7 (1848) pp. 69–75.Google Scholar