Triangle Pattern

A triangle pattern is a technical chart formation where two converging trendlines—one upper and one lower—create a triangular shape as price action narrows over time. This pattern indicates decreasing volatility and often precedes a breakout in either direction, signaling potential continuation or reversal of the prevailing trend.

How It Works

The pattern forms when each successive swing high is lower than the previous one (descending upper trendline) and each swing low is higher than the prior one (ascending lower trendline). As the distance between the lines shrinks, trading volume typically diminishes. A breakout occurs when price closes decisively above the upper trendline or below the lower trendline, often accompanied by a surge in volume. The height of the triangle at its widest point can be projected from the breakout point to estimate a price target.

Why It Matters

Traders use triangle patterns to anticipate imminent price moves and set entry, stop‑loss, and profit‑target levels. For example, in an ascending triangle—where the upper trendline is flat and the lower trendline slopes upward—a breakout above the resistance line often suggests bullish continuation, prompting a long position with a stop just below the recent swing low. Recognizing these formations helps traders align their strategies with market momentum and manage risk effectively.