G1 = (-2, 5)
G2 = (-2, 0)
f = Line(G1, G2)
A = (-8, 2)
A' = Mirror(A, f)
B = (-6, 2)
B' = Mirror(B, f)
C = (-7, 5)
C' = Mirror(C, f)
g = Segment(A, B)
h = Segment(B, C)
i = Segment(C, A)
j = Segment(A', B')
k = Segment(B', C')
l = Segment(C', A')
Symmetrieachse = (-1.9924876969176826, 9.620799963123345)