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Biangular Coordinates Redux: Discovering a New Kind of Geometry
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Winkel, Brian; Naylor, Michael – College Mathematics Journal, 2010
Biangular coordinates specify a point on the plane by two angles giving the intersection of two rays emanating from two fixed poles. This is a dual of Cartesian coordinates wherein a point on the plane is described by two distances. Biangular coordinates, first written about in 1803 in France, were subsequently studied in Britain at the end of the…
Descriptors: Geometry, College Mathematics, Mathematics Instruction, Geometric Concepts