Ascending Triangle
In simple terms
An ascending triangle is a chart pattern where the price bounces between a flat ceiling and a rising floor, like a ball bouncing higher with each bounce but hitting the same roof. When the price finally breaks through the ceiling, it usually means the price is about to go up.
Definition
Bullish continuation pattern with a flat top and rising lows.
In depth
An ascending triangle is a bullish continuation pattern formed by a horizontal resistance level (flat top) and an upward-sloping trendline connecting higher lows (rising support). As price action compresses between these converging levels, decreasing volatility and volume typically precede a breakout above resistance, which traders interpret as confirmation of continued uptrend momentum and increased buying pressure overcoming previous resistance.
How does Ascending Triangle work?
Price repeatedly runs into the same resistance level and stalls there, while each pullback bottoms higher than the last. Connecting the highs gives a roughly horizontal line and connecting the lows gives an upward-sloping one; the two converge into a triangle. As the range narrows, volatility compresses and volume typically falls. The pattern resolves when price closes decisively outside one of the lines. Chartists measure the triangle's widest vertical height and project it from the breakout point as a rough reference. Despite the rising lows, resolution can come in either direction.
An example
Illustratively, a token is turned back at $10 three times, while its dips end at $8.00, $8.60, and $9.20. The triangle's widest height is $2.00, measured from $10 down to the first low at $8. A close above $10 would project a rough $12 reference; a close below the rising trendline invalidates the setup. These are made-up figures, and neither outcome is assured.
Figures are illustrative only.
What beginners get wrong
- Assuming an ascending triangle must break upward is the standard error, since a meaningful share resolve downward through the rising support line.
- Drawing the lower trendline through wicks in one place and closing prices in another manufactures a triangle that is not really on the chart.
- Calling a triangle from a single touch on each line is premature; at least two touches per side are needed to define the boundaries.
- The apex acts as a deadline rather than a target, and patterns that drift into the point without breaking usually lose whatever meaning they had.
Related terms
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Educational only — not financial advice.