Trading triangles is a fantastic concept, but they don't always work out. Traders typically make the mistake of entering the market before the triangle has been broken.

As shown in the preceding screenshots of the triangle and momentum analysis, the breakout in the other direction was most likely caused by the top forming faster and the price returning to the lower trendline.

But that didn’t happen, and the price broke out of the triangle.
This shows that triangles aren’t always the “holy grail,” and that they can fail. Even if the trend line is broken, the triangle’s true signal will not appear for a long time.

A trendline breakout is also acceptable only if the candle closes outside the triangle and remains there.

Waiting for a full candle to form outside the triangle will miss out on some action, but it will prevent you from losing money on false breakouts.

Triangle patterns are formed when price moves between converging support and resistance trendlines, creating a narrowing trading range. The three common types are ascending, descending, and symmetrical triangles. Traders usually begin by identifying clear swing highs and lows and drawing trendlines that connect these points.

A common approach is to wait for price to break outside the triangle before considering an entry. An upward breakout from an ascending triangle can show increasing buying pressure, while a downward break from a descending triangle can indicate stronger selling pressure. A symmetrical triangle can break either upward or downward, so confirmation is particularly important.

Traders may place a stop-loss beyond a recent swing point or on the opposite side of the pattern. The potential price target can sometimes be estimated by measuring the triangle's widest section and projecting that distance from the breakout point. Volume, market trend, and price structure can provide additional confirmation. No triangle guarantees a successful breakout, so risk management remains essential.