The most important gap of all

A closer look at the geometric gap created by five tetrahedrons all sharing a common edge.GeometricGap3
Gap = 7.356103172453456846229996699812179815034215504539741440855531+ degrees

 Related key pages:
1. Numbers: https://81018.com/number/#Gap. 2016
2. Pentastar: https://81018.com/pentastar/ 2017
3. Duped: https://81018.com/duped/#Aristotle 2020
2. A homepage: https://81018.com/alternative/#6b 2020
5. Zoomtool question: https://81018.com/zoomtool/ 2016
6. Inquiry for FQXi-related study: https://81018.com/fqxi-aristotle/ 2020

Open questions about this gap:
1. When does the first gap appear along the 202 notations?  …why?
2. There are no gaps with the initial objects, the tetrahedron and octahedron; it all fits perfectly, naturally evolving from cubic-close packing of equal spheres
3. The first time the gap is mentioned within this website:
https://81018.com/2014/05/21/propaedeutics/

Another look!
Our earliest comments in 2013
The perfect pentagon