Fibonacci spiral
My point of view:
As can be seen, points one and one determine the precise horizontal and one and two inclined straight lines tended to turn vertically. Thereafter, observations and logical reasoning are the other straight, "read" - "odd" elements in parallel determine the sequence-dependent horizontal and the other ("odd" - "read") will be approximations of parallelism of the first vertical (between the first two points) construction and always will slightly modify according to one another in order of increasing raw of Fibonacci!
