Projecting sphere onto plane {orthographic projection, zenithal} can use zenithal projection with projection center at infinite distance. Orthographic projection preserves either equivalent angles or areas. Mapmaker can choose to keep equivalent areas or equivalent directions but cannot choose both.
Mathematical Sciences>Geometry>Projections>Sphere To Plane>Zenithal>Center
3-Geometry-Projections-Sphere To Plane-Zenithal-Center
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Date Modified: 2022.0224