is the position of an object in a , relative to the corresponding axis. In a coordinate system, are usually expressed as a coordinate pair
, also called ordered pair
, which is denoted by
The first coordinate states the position along the
axis and the second coordinate states the position along the
axis. In a coordinate system, three are needed to express a coordinate position. Each number tells the point's position in relation to one axis.
A coordinate point in three dimensions is also referred to as an ordered triple
and denoted by
The same reasoning applies for coordinate systems with more than three dimensions.