[formatc1702]

As a Mechanical Engineer, I'm very happy to see designers discovering the joy of parametric CAD :-)

I have longed for this sort of functionality in tools like Inkscape, and have often resorted to SolidWorks, Fusion360, SolveSpace, or other engineering-focused tools for "artistic" projects, because they enabled me to quickly iterate over different parameters while respecting certain constraints and relationships (as shown in the original post).. Once I was happy with the result, I would export the design as DXF or similar, and do the final styling in Inkscape.