Definitions for "Polar coordinates"
Coordinates from a horizontal reference system which locate points by measuring their distance and angle of direction from a central point on a base line called a pole, centre, or origin.
A coordinate system based on a sphere.
A two-coordinate geometry in which position from an origin is specified by direction and distance, for instance, course and distance on a Mercator chart.
The system of urban planning employed by the ancient Greeks in determining the placement of buildings in the sacred precinct. This ordering system is based on a single fixed point, usually the propylaea, from which the buildings are placed so that their volume is apparent, and no building is hidden by another. For more information on this subject see 'Architectural Space in Ancient Greece', C. A. Doxiadis, M.I.T. Press.