Hoose the term that best completes each statement. refers to a property or process that has an equivalence in two or more directions. refers to a property or process that has a consistent recurrence, or frequency, over time or space. refers to the characteristic of a set of objects, wherein the objects are separated in space by the same distance along a given direction. refers to the characteristic of an object (or a set of objects) of being made up of exactly similar parts facing each other or around an axis in space.