It is a location in space
describe a point
its a sign
it is a location in space.
A point.
we need a fixed reference point to describe the position of a body
Only if you are using it to describe something: a point-of-sale terminal.
coordinates
You need to agree on a point that everybody knows, and then provide a minimum of three numbers to describe the object's location compared to the known point.
To identify and objects location you need three pieces of information. These are a reference point, a distance from the reference point, and a direction from the reference point.
You need to agree on a point that everybody knows, and then provide a minimum of three numbers to describe the object's location compared to the known point.
coordinates.
coordinate