Fibonacci extensions

Fibonacci, a mathematician from the early thirteenth century, discovered a series of mathematical figures which plays a key role in the cyclical phenomena generally. The Fibonacci series is calculated as follows: U (n) = U (n-1) + U (n-2)
Thus, the first numbers are 1, 1, 2, 3, 3, 5, 8, 13, 21, 34, 55, 89, 233, etc..
This suite has remarkable characteristics:

Estimates based on the method of Fibonacci extensions admit the principle that values are changing cyclically at the rate given by the number of gold.
Method of calculation and interpretation

Fibonacci Extensions are complementary of Fibonacci retracements. In the case of Retracements, levels considered range from 0 to 100%. With the extensions, the levels considered are above 100%.
We observe on the curve of price corresponding to a significant trend and  we draw a line connecting the highest and the lowest (or vice versa)on this period.
The height between these two points is the basis of calculation for Fibonacci levels. Generally we distinguish five levels corresponding to distances of 100%, 127.2%, 161.8%, 261.8% and 200% of this height from the end point of the identified trend .

Horizontal lines are plotted for each level which plays a role of support and resistance.
Next to a major change in the trend, " Fibonnacci extensions" define the objectives of the magnitude of the following correction

Example