Now I think that I might be able to tile the plan by putting
enough triangles together as a basic unit turning a bit and
repeating myself so let's see:
to Pat1 :r :p :s
repeat :r [repeat :p[ equi :s rt
60]]
fd :s
end
Well Pat1 10 4 20 just gives a hexagon - so would Pat1 6 4 20
of course.
I might experiment a little more with the variables but
perhaps just turning right 60 after every triangle is a bit
predictable. How about: