D = (-5, 4)
c = Line(D, xAxis)
A = (-2, 1)
B = (2, 1)
C = Point(c)
a = Segment(A, C)
b = Segment(B, C)
d = Line(A, B)
E = Midpoint(A, B)
C' = Mirror(C, E)
e = Segment(A, C')
f = Segment(B, C')