Polyconic projection class
Class of map projections / From Wikipedia, the free encyclopedia
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This article is about the class of projections called "polyconic". For the specific projection called "polyconic", see American polyconic projection.
Polyconic can refer either to a class of map projections or to a specific projection known less ambiguously as the American polyconic projection. Polyconic as a class refers to those projections whose parallels are all non-concentric circular arcs, except for a straight equator, and the centers of these circles lie along a central axis. This description applies to projections in equatorial aspect.[1]