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Area of a Quadrilateral by Triangulation

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This Demonstration calculates the area of a quadrilateral by triangulation using Heron's formula for each of two triangles. If the quadrilateral is reflex (not convex), proper care is taken in order not to add up the overlapping triangles.

Contributed by: Alvaro Jose Ibarra Rivas (Institucion Educativa Santa Fe, Santiago de Cali - Colombia) (March 2011)
Open content licensed under CC BY-NC-SA

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