eq1: x^(2) + y^(2) = 1
l1 = Sequence((cos(π / 8 + (n * π / 4)), sin(π / 8 + (n * π / 4))), n, 0, 8)
l2 = Sequence((cos((-π) / 8 + (n * π / 2)), sin((-π) / 8 + (n * π / 2))), n, 0, 4)
l3 = Sequence((cos(π / 24 + (n * π / 6)), sin(π / 24 + (n * π / 6))), n, 0, 12)