Quote by pmb_phy
A friend of mine is a GRist and once explained to me that geometry is a branch of physics because the basic knowledge of geometry comes from observing nature.
Pete

Oh, and to not stray off topic and answer the question the answer is, of course, no, because geometry doesn't have to be studied by observing nature and can easily be studied completely independently of nature. This is clearly demonstrated by the way it was axiomitised (is this a word?) and study of this actually lead to the biggest breakthroughs in it (i.e. the discoveries of nonEuclidean geometries), which would have got nowhere by simply studying nature. It may have
started that way, but I don't know of many physicists researching geometry (only, perhaps, using it).