B = (117.14998662736197, 56.99499970180568)
O = (77.25836714875689, 142.9128698520759)
t = (156.68578261045212, 141.858523629133)
a = Segment(O, t)
s = (57.22578891284262, 210.74247686139967)
b = Segment(O, s)
α = Angle(t, O, s)
I = (193.23645167247116, 140.80417740619015)
p = (283.20732936359497, 141.858523629133)
c = Segment(I, p)
q = (249.11680148844258, 216.71710545807585)
d = Segment(I, q)
β = Angle(p, I, q)