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Absolute distance
A distance that can be measured with a standard unit of length, such as a mile or kilometer
Absolute location
The exact position of an object or place, measured within the spatial coordinates of a grid system
Accessibility
The relative ease with which a destination may be reached from some other place
Aggregation
To come together into a mass, sum, or whole
Azimuthal projection
A map projection in which the plane is the most developable surface
Breaking point
The outer edge of a city's sphere of influence, used in the law of retail gravitation to describe the area of a city's hinterlands that depend on the city for its retail supplies
Cartograms
A type of thematic map that transforms space such that the political unit with the greatest value for some type of data is represented by the largest relative area