Shoelace formula

English

Shoelace scheme for determining the area of a polygon with point coordinates $(x_1,y_1),...,(x_n,y_n)$

Etymology

So called because the constant cross-multiplying for the coordinates making up the polygon is analogous to the threading of shoelaces.

Proper noun

1. Template:Lb An algorithm to determine the area of a simple polygon whose vertices are described by their Cartesian coordinates in the plane.

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