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golden ratio
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Golden ratio diagram showing segments a and b, where phi equals a divided by b and a plus b divided by a, approximately 1.618; a golden rectangle is divided into blue a and red b sections. Diagram titled Golden spiral with rectangles showing segments a and b, the formula (a + b)/a = a/b = 1.618033..., and colored nested rectangles with a white spiral. Price chart with Fibonacci levels shown.
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The golden ratio
A line divided in the golden ratio is shown above, with a golden rectangle below...
Encyclopædia Britannica, Inc.
Golden spiral with rectangles
A golden spiral traced through a series of golden rectangles, each smaller and differently...
Encyclopædia Britannica, Inc.
Fibonacci retracements and extensions
Retracement and extension: Retracement numbers are set at key levels starting from...
Source: StockCharts.com. For educational purposes only.
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