<P> In mathematics, the origin of a Euclidean space is a special point, usually denoted by the letter O, used as a fixed point of reference for the geometry of the surrounding space . </P> <P> In physical problems, the choice of origin is often arbitrary, meaning any choice of origin will ultimately give the same answer . This allows one to pick an origin point that makes the mathematics as simple as possible, often by taking advantage of some kind of geometric symmetry . </P>

What is the definition of origin in math