Search results

...er, the two terms are used interchangeably; a statement that an object is "spherical" does not imply that it is hollow (still less that it is of [[infinitesimal ...ing]] [[set]] of nested spheres, is the basis for a [[spherical coordinate system]] sometimes used in [[geometry]].

...f the triangle are known. The area of an arbitrary polygon, as long the [[coordinate]]s of its [[vertex|vertices]] are known, can be derived through an [[expres ...f course be derived for areas of curved surfaces as well. The area of a [[spherical triangle]] on a sphere of radius ''R'', for example, can be written as <mat

...ts opposite) to move along it, and any point on it can be described by one coordinate. So too a [[circle]]: one can only move clockwise or counterclockwise, and ==Coordinate systems==