Graphic representation of the surface features of a place or region on a map, indicating their relative positions and elevations.
A diagram that exhibits a relationship, often functional, between two sets of numbers as a set of points having coordinates determined by the relationship. Also called plot.
A large, usually continuous segment of a surface or space; area.
A method of projecting maps of parts of the earth’s spherical surface on a surrounding cone, which is then flattened to a plane surface having concentric circles as parallels of latitude and radiating lines from the apex as meridians.
The zero meridian (0°), used as a reference line from which longitude east and west is measured. It passes through Greenwich, England.
Angular distance on the earth’s surface, measured east or west from the prime meridian at Greenwich, England, to the meridian passing through a position, expressed in degrees (or hours), minutes, and seconds.
A straight line about which a body or geometric object rotates or may be conceived to rotate
The angular distance north or south of the earth’s equator, measured in degrees along a meridian, as on a map or globe.
Either the northern or southern half of the earth as divided by the equator or the eastern or western half as divided by a meridian.