I noticed that many traders get confused with triangle patterns on charts, even though they are one of the most reliable tools of technical analysis. Let's understand the four main types that actually work.

Let's start with the descending triangle. This is a bearish triangle pattern that I often see before a price drop. It is formed by a horizontal support line at the bottom and a descending resistance line at the top. What does this mean? Sellers are exerting increasing pressure, and each time the price tries to go up, it encounters lower ceilings. When such a triangle pattern breaks downward, it is usually a signal to sell. The main thing is to wait for confirmation with volume. False breakouts happen, especially on low volume, so be careful.

The opposite is the ascending triangle. This is a bullish pattern, where the resistance line at the top is horizontal, and the support line at the bottom is rising. It’s clear that buyers are becoming more active, and the price is making higher lows consistently. When the price breaks above the resistance with increased volume, it’s a buy signal. This triangle pattern works best within an existing uptrend.

The symmetrical triangle is a neutral pattern. Both lines converge toward the center: resistance decreases, support rises. This is a consolidation period when the market doesn’t know which way to go. The triangle pattern can break in either direction, and traders should be prepared for both scenarios. The main rule is to enter a position only after a clear breakout, not earlier. Decreasing volume before the breakout usually indicates that a sharp move is imminent.

And finally, the expanding triangle is the most dangerous triangle pattern. Here, the lines diverge, and volatility increases. This can be a sign of market indecision or preparation for a sharp move. With this pattern, you need to be more cautious, opening positions only after a breakout and with a strict stop-loss.

A few practical tips. Always look at volume — it confirms the strength of the breakout. Patterns work better if they form within a clear trend. And definitely use stop-losses; they protect your capital from unexpected movements. Understanding these four types of triangles will help you trade more accurately and profitably. In practice, I see that traders who understand these patterns well achieve noticeably better results. It’s worth spending time studying them.