Set minimum angle generated for quads to 30

This looks like the way it was intended to be, considering
the lines in question were randRange(30,160) instead of (20,160).

Also this finally fixes the lock-ups caused by Quad construction.
Tested this fact by generating all 6 random quads 2,000,000 times
each.
Merge pull request #74742 from theinternetftw/one-last-geo-fix

One last graphie-geometry fix