When I look at charts, one of the most reliable things I've noticed is how price movements form certain geometric shapes. The triangle figure on the chart is one of those patterns that really helps understand what might happen next. Let's figure out how these shapes work in trading.

I'll start with the ascending triangle. This is a bullish pattern, and it appears when the resistance line remains horizontal, while support rises upward. See, this shows that buyers are becoming increasingly aggressive. When the price breaks through the upper horizontal line with good volume, it's a signal to open a buy position. The key is to wait for confirmation through volume; otherwise, you'll get a false breakout.

The opposite case is the descending triangle. Here, resistance decreases, and support stays in place. This is a bearish signal. When the price breaks below the support line, you can open short positions. But remember— in this case, the stop-loss is placed above the last resistance line. An important point: this pattern works best when volume decreases as the price approaches the support level.

Now, the symmetrical triangle is a neutral shape. Here, both resistance and support converge symmetrically, creating consolidation. The price can break out in either direction. The main rule when trading such a triangle pattern is not to enter a position until a clear breakout occurs. When the breakout does happen, follow its direction, but with caution, because it could be a trap.

There's also an interesting pattern—the expanding triangle. This is the opposite of the converging triangles. Support and resistance lines diverge further apart, showing increasing volatility. This pattern requires special caution because it can be very unstable. Positions should only be opened after a clear breakout, with tighter stop-losses.

In trading using these shapes, there are some universal rules. First, volume is king. If a breakout occurs without a significant increase in volume, it could be a false signal. Second, always consider the context. If an ascending triangle appears in the middle of an uptrend, it's a much more reliable signal than if it appears during sideways movement.

Risk management is also critical. The stop-loss should be placed on the opposite side of the last key line—that will protect your capital from unexpected reversals. Profit targets can be calculated based on the height of the triangle at its widest part.

Regarding practice, I advise not to rush into entries. It's better to wait for the pattern to fully form and for a clear breakout rather than trying to catch the movement in the early stages. Decreasing volume during pattern formation often signals an upcoming breakout—this is a good indicator for preparation.

The main idea is that geometric shapes on charts reflect the struggle between buyers and sellers. Understanding the psychology behind each pattern allows you to better predict the next price move and trade with greater confidence.