Side Lengths

C = (0, 20.49)
g = 55 (slider from 20 to 60, step 1)
A = (0, 0)
B: (sqrt(g^(2.0) - 20.49^(2.0)), 20.49)
a = Segment(A, B)
D: (x(B), y(A))
b = Segment(C, B)
c = Segment(B, D)
d = Segment(A, D)
f = true