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Area of a Pentagon
This Demonstration shows that you can calculate the area of a pentagon or any other polygon using triangulation in combination with Heron's formula for the individual triangle areas.



"Area of a Pentagon" from The Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/AreaOfAPentagon/
Contributed by:Alvaro José Ibarra Rivas (Institución Educativa Santa Fe Santiago de Cali - Colombia)
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