Classical architecture ... or works of man all seem to be related to a sequence of numbers named for 13th century Mathematician Leonardo Fibonacci. The earnest mathematics buffs of the California ...

Fibonacci retracement levels are depicted by taking high and low points on a chart, marking the key ratios, and using them in a trend-trading strategy.

The most commonly used Fibonacci percentages in trading are 38.2%, 50%, and 61.8%, derived from the sequence's mathematical ... and frequently appears in art, architecture, and natural sciences.