## Golden Spiral as an affine tessellation
a2.
angleunit(deg)
let(fi = (1+sqrt(5))/2)
let(one = test(1/fi + 1/fi^3 + 1/fi^4))
tile(1,90,1,90,1,90,1/fi,180,1/fi^4,180,1/fi^3,90)
conway("(0 3)(1 4)(2 5)")