Ratio of a line segment-Something golden!
1 = x
x x + 1
x^2 = x + 1
x^2 - x - 1 = 0
a = 1
b = -1
c = -1
x = 1 + sqrt(1 + 4)
2
x = 1 + sqrt (5)
2
x ~ 1.6180 ( - .618 is extraneous, since distance > 0)
Which is the golden ratio.