Properties of a general polygon
Calculation of the perimeter length, area, centroid, second moment of areas, principal axes and distance to the outer fibres of any plane non-intersecting polygon using Gauss's area method ('shoelace method') from the cartesian coordinates of the perimeter. Set up for SI units, but can be used for Imperial. General application derived from use in civil and structural engineering for irregular foundations and sections in bending.
27 Oct 2020
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