Your question sounds a little bit philosophical to me. And I like it.
Up to a certain point, everything has its own geometry: geometry stands for form, shape, spatial structure. YOU have a certain geometry (hope not pseudopyramidal
), because you are made of matter, and your matter occupies a certain position in the universe, a part of it.
So, according to my point of view, everything in this universe has a geometry: you can call it (molecular) geometry, but also form, shape, structure. They are all synonyms. This is tantamount to saying that I have a certain physical, ontological geometry (or form).
To sum up, CO, as everything, has a (molecular) geometry: a linear one.