1073.20 Interrelationship Twoness: Third Kind of Twoness

1073.21 All systems have a neutral axis of spinnability, with two external polar vertexes and two interior center axis vertexes which are congruentergo, visible only as one vertex located at the convergence-divergence, integrative-disintegrative, inbound-outbound, turnaround, neutral center of gravity-center of radiation of the system.

1073.22 The exterior and separate set of two polar vertexes is the additive twoness of systems, and the congruent exterior-interior set is the multiplicative twoness of all systems. The interior-exterior differentiating fourness has an interrelated sixness that differentiates as a unique third kind of twoness of unique interrelatedness of all systems.