Triangle patterns. Three types, three biases.

Triangle patterns form when price compresses between converging trend lines. Each of the three triangle types has its own bias. Ascending triangles lean bullish. Descending triangles lean bearish. Symmetrical triangles are neutral. All three resolve with a breakout that carries a measured move target. Reading the triangle type gives the trader a probabilistic edge before the breakout happens.

The ascending triangle

Flat upper resistance combined with a rising lower trend line. Price keeps testing the same resistance level (creating the flat top) while the lows make higher and higher prints (the rising lower line).

The pattern shows buyers stepping in at progressively higher prices while sellers consistently defend the same level. The buyers are getting stronger. The sellers are not. Eventually the buying pressure overwhelms the resistance and price breaks out upward.

Ascending triangles are the most reliable of the three triangle types. Breakout direction is upward in roughly 70 percent of cases. The breakout often comes with strong volume because the resistance was a clear level that many participants were watching.

The descending triangle

The mirror image. Flat lower support combined with a falling upper trend line. Price keeps testing the same support level (flat bottom) while the highs make lower prints.

Sellers are stepping in at progressively lower prices while buyers consistently defend the same level. The sellers are getting stronger. The buyers are not. Eventually the selling pressure overwhelms the support and price breaks down.

Descending triangles break down in roughly 65 percent of cases. The remaining cases produce upward breakouts that often run hard because they catch the short sellers off guard.

The symmetrical triangle

Both trend lines converging at roughly the same angle. The upper line slopes down. The lower line slopes up. Price compresses into a smaller and smaller range over time.

The pattern is neutral. Neither side is gaining ground over the other. The eventual breakout can be in either direction with roughly equal probability.

Symmetrical triangles tend to break in the direction of the prior trend slightly more often than against it. A symmetrical triangle inside an uptrend breaks up about 55 percent of the time. The same triangle in a downtrend breaks down about 55 percent of the time.

The four conditions for a valid triangle

One. Clear convergence of trend lines.

The lines must converge, not be parallel (channel) or diverge (broadening pattern). The convergence is the compression that produces the breakout energy.

Two. At least four to five touches across both lines.

The trend lines need multiple confirmations. Three total touches is too loose. Four to five total touches across both lines gives the pattern reliability.

Three. Decreasing volume during formation.

Volume should taper as the triangle compresses. The declining volume confirms the pattern. Heavy volume during the formation often signals a different pattern (consolidation that fails to compress properly).

Four. Volume on the breakout.

The breakout candle should have volume meaningfully above the recent triangle average. Without volume, the breakout often fails within a few sessions.

The measured move target

The target is the widest part of the triangle (usually near the start of the pattern) projected from the breakout point in the direction of the breakout.

Triangle that started at $100 to $80 has a height of $20. Breakout above $90 targets $110. Breakdown below $85 targets $65.

The target is reached on average 60 percent of the time when the breakout has volume confirmation. Take partial profits at the target and trail the rest if the breakout extends.

The entry approaches

Standard entry.

Wait for the breakout candle to close beyond the triangle trend line. Enter on the close or on the next bar.

Conservative entry.

Wait for the breakout, then wait for the pullback to retest the broken trend line. Enter on the bounce or rejection from the retest. Tighter stop, slightly worse entry price.

Aggressive entry.

Enter at the apex (the point where the trend lines converge), in the expected breakout direction. Tightest stop, highest failure rate because the breakout direction is sometimes wrong.

Scaling entry.

Take partial on the breakout. Add on the retest if it happens. Add more on continuation beyond a defined level. Balances missed move risk against fake breakout risk.

The stop

For breakout entries, stop just beyond the opposite trend line. For ascending triangle breakout up, stop below the rising lower trend line at the breakout level. For descending triangle breakdown, stop above the falling upper trend line.

For retest entries, stop on the other side of the broken trend line (now the new support or resistance).

What kills triangle traders

Trading triangles too early. Fewer than 4 to 5 total touches on the trend lines means the pattern is not confirmed. Wait for the validation before entering.

Anticipating the breakout direction. Even ascending triangles break down sometimes. Wait for the actual breakout candle close before committing.

Ignoring the higher timeframe trend. A triangle in a strong opposite trend has a higher failure rate. Match the breakout direction to the higher timeframe when possible.

Sizing too large on the breakout because the move looks obvious. Triangle breakouts can fake out in either direction. Standard position sizing rules apply.

Holding through the apex without exiting. A triangle that goes all the way to the apex without breaking out usually fails. The compression is exhausted and the pattern often dissolves into a range bound chop.

The setup for trading ascending triangles

Daily chart. Stock in an uptrend or sideways consolidation after an uptrend. Triangle forms with flat resistance at $50 and rising lower trend line from $42 to $48.

Volume tapers over the 6 week formation. At least 4 touches on the upper line and 4 on the lower.

The breakout happens when price closes above $50 with volume 50 percent above the recent average.

Enter long on the breakout close. Stop below the most recent touch on the lower trend line (around $47 to $48). Target the measured move of $50 plus the triangle height ($8) = $58.

Take partial profits at $58. Trail the rest with the new uptrend.

The relationship to other patterns

Triangles are related to wedges and pennants. The distinctions matter for the bias direction.

Pennant. Small triangle following a sharp pole. Continuation pattern. Breaks in the direction of the pole.

Wedge. Trend lines slope in the same direction. Reversal pattern. Breaks against the slope direction.

Triangle. Trend lines slope toward each other (one up, one down). Bias depends on type (ascending bullish, descending bearish, symmetrical neutral).

Reading the chart correctly means classifying the shape correctly. The trend line angles tell you which pattern you are looking at.

Where the audit fits

The audit reads the actual triangle entries and shows whether the trader is matching the triangle type to the appropriate strategy. For most retail traders the pattern is treating all triangles the same way regardless of the bias. The plan locks the type specific rules. Five to seven pages.