a = (-2.204793028322447, 1.0904139433551219)
b = (-0.11982570806100248, 2.5522875816993507)
c = (0.7429193899782057, -0.5392156862745079)
v = Vector(a, c)
u = Vector(a, b)
d: b + c - a
poly1, a_1, b_1, d_1, c_1 = Polygon(a, b, d, c)
u' = Vector(c, d)
v' = Vector(b, d)
e_1 = Segment(b, c)
f = Segment(a, d)
e: (a + d) / 2