wedge

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Wedge

A chart pattern composed of two converging lines connecting peaks and troughs. In the case of falling wedges, the pattern indicates temporary interruptions of upward price rallies. In the case of rising wedges, indicates interruptions of a falling price trend.

Triangle

In technical analysis, a series of high and low prices for a security that, when plotted on a chart, looks vaguely like a triangle. A triangle indicates that investors do not know whether a bull market or a bear market will prevail. If the triangle breaks upward, it is a bullish sign, but if it breaks downward, it is a bearish sign. A triangle is also called a wedge. See also: Ascending sign, Descending sign.

wedge

See triangle.
References in periodicals archive ?
The methodology uses the 41-step Stouffer transparent step wedge, T4110, as the test chart to evaluate the optical density.
If you are using a Stouffer 21 step wedge to verify the correct exposure time you want to see a clear step I and 2 with a visual step 3.
X-ray machines are also submitted by their manufacturers to be certified as meeting certain standards - most notably the ASTM Step Wedge Test.