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Fibonacci Arcs

For construction of this tool the user sets position of two extreme points. Fibonacci Arcs are built as follows. First the line of trend is drawn between two extreme points. For example, this line can be drawn from a cavity to opposing peak. Then three arches with the center in the second extreme point, crossing a line of a trend at Fibonacci levels of 38,2 %, 50 % and 61,8 % are drawn.

Fibonacci Arcs are considered as potential levels of support and resistance. Usually Fibonacci Fans and Arcs are drawn on the chart at the same time, and the levels of support / resistance are defined by points of crossing of these lines.

It is necessary to note, that points of crossing of arches from a price curve can vary depending on scale of the chart, because the arch is a part of a circle, and its form is always constant.

In other words, Fibonacci Arcs are constructed by first drawing a trendline between two extreme points on a chart; for example, a trough and the opposing peak. Three arcs are then drawn, centered about the second extreme point.

The radiuses of these arcs represent distances along the trendline proportional to its length and are equivalent to the Fibonacci levels of 38.2%, 50.0%, and 61.8%. The interpretation of Fibonacci Arcs involves anticipating support and resistance as prices approach the arcs.

The chart on the preceding page illustrates how the arcs can provide support and resistance. A common technique is to display both Fibonacci Arcs and Fibonacci Fan lines (see below) and to anticipate support/resistance at the points where the Fibonacci Studies intersect. Note that, because the Arcs are drawn so they are circular relative to the chart axis, the points where the Arcs cross the price data will vary depending on the scaling of the chart.