being everywhere equidistant and not intersecting

something having the property of being analogous to something else

an imaginary line around the Earth parallel to the equator

a saying that is widely accepted on its own merits

(logic) a proposition that is not susceptible of proof or disproof; its truth is assumed to be self-evident

of or relating to the simultaneous performance of multiple operations

(mathematics) one of a set of parallel geometric figures (parallel lines or planes)