Differenze tra le versioni di "Formula di Erone"

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== Collegamenti esterni ==
* [httphttps://www.cut-the-knot.org/pythagoras/herons.shtml A Proof of the Pythagorean Theorem From Heron's Formula] su [[cut-the-knot]]
* {{cita web|http://www.mathopenref.com/heronsformula.html|Interactive applet and area calculator using Heron's Formula}}
* {{cita web|http://www.math.dartmouth.edu/~doyle/docs/heron/heron.txt|J.H. Conway discussion on Heron's Formula}}
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