Word Origin and History for nexus Expand. n. 1660s, bond, link, means of communication, from Latin nexus that which ties or binds together, past participle of nectere to bind, from PIE root *ned- to bind, tie (see net (n.)).
Latitude is an angle (defined below) which ranges from 0Â° at the Equator to 90Â° (North or South) at the poles. Lines of constant latitude, or parallels, run east-west as circles parallel to the equator. Latitude is used together with longitude to specify the precise location of features on the surface of the Earth.he reduced or parametric latitude, Î², is defined by the radius drawn from the centre of the ellipsoid to that point Q on the surrounding sphere (of radius a) which is the projection parallel to the Earth's axis of a point P on the ellipsoid at latitude.
The Equator is the line of 0Â° latitude, the starting point for measuring latitude. The latitude of the North Pole is 90Â° N, and that of the South Pole is 90Â° S. The latitude of every point in between must be some degree north or south, from 0Â° to 90Â°. One degree of latitude covers about 69 miles (111 kilometers). Longitude is measured in degrees east or west of the prime meridian. This means one half of the world is measured in degrees of east longitude up to 180Â°, and the other half in degrees of west longitude up to 180Â°.