Triangle patterns are geometric price action structures representing periods of volatility compression. As buyers and sellers engage in an increasingly narrow range, price coil like a spring. When this coiling reaches critical mass, the stored energy releases in an explosive directional breakout. Mastering the three major triangle archetypes allows you to trade with the momentum of that release.
Ascending Triangles (Bullish Pressure)
The Ascending Triangle is characterized by a horizontal resistance level across the top and an upward-sloping trendline connecting higher swing lows along the bottom.
This visual shape reveals clear buyer dominance: while sellers are defending a specific resistance price, buyers are willing to purchase at progressively higher levels on each pullback. This creates ascending pressure against the ceiling until the sellers run out of inventory, resulting in a strong bullish breakout.
Resistance Ceiling: 1.2500 (tested 3 times) Swing Low 1: 1.2300 Swing Low 2: 1.2380 (higher low) Swing Low 3: 1.2440 (higher low) Interpretation: Sellers are static; buyers are aggressive and raising their bids. Bias: Bullish breakout above 1.2500.
Descending Triangles (Bearish Pressure)
The Descending Triangle is the exact inverse. It features a horizontal support floor along the bottom and a descending upper trendline connecting lower swing highs.
Here, buyers are defending a fixed price level, but sellers are becoming increasingly aggressive - unwilling to wait for higher prices before dumping inventory. As lower highs press down on the support floor, the buy orders eventually get absorbed, leading to a sharp bearish breakdown.
Symmetrical Triangles (Bilateral Compression)
A Symmetrical Triangle features converging trendlines of roughly equal slope: the upper trendline slopes downward (lower highs) while the lower trendline slopes upward (higher lows).
Unlike ascending or descending triangles, a symmetrical triangle represents pure equilibrium - neither buyers nor sellers hold clear structural dominance. While it often breaks in the direction of the prevailing trend, it is fundamentally a bilateral pattern. Traders must remain neutral and trade the direction of the confirmed breakout.
Apex Dynamics and Breakout Timing
The point where the two trendlines intersect is called the apex. The highest-probability triangle breakouts occur between 60% and 75% of the distance from the base to the apex.
Warning: If price drifts all the way to the very tip of the apex without breaking out, the pattern loses momentum and often devolves into messy, choppy sideways noise. The best breakouts happen before price reaches the final 25% of the triangle.
Filtering False Breakouts & Measuring Targets
To calculate the measured move target for any triangle: measure the vertical distance at the widest part of the triangle (the base) and project that exact distance from the breakout point.
Triangle Base: High = 1.1000 | Low = 1.0700 (Height = 300 pips) Breakout Point: Price closes above upper trendline at 1.0920 Take Profit Target: 1.0920 + 300 pips = 1.1220 Stop Loss: Placed just inside the triangle below the most recent higher swing low (e.g. 1.0830).