Symmetrical triangles
Identify symmetrical triangles as continuation patterns and understand why they typically break in the prior trend's direction.
Lesson path
Technical Analysis + Price Action
Classic Chart Patterns
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Identify symmetrical triangles as continuation patterns and understand why they typically break in the prior trend's direction.
Two diagonal lines closing in on each other
A symmetrical triangle is what you get when both the highs and the lows of a range are tightening at the same time. The top trendline is drawn across lower highs and slopes downward. The bottom trendline is drawn across higher lows and slopes upward. The two lines converge toward a point on the right side of the chart. That point is called the apex. The range inside is getting smaller candle by candle, like a coiled spring.
Unlike ascending and descending triangles, the symmetrical version has no built-in directional bias from its shape alone. Both buyers and sellers are losing ground at the same rate. Higher lows and lower highs is a tug of war with neither side dominant. So how do you read it? You look at the trend that came before the triangle. If price was trending up before the triangle started, the bias is for a continuation upward. If price was trending down before the triangle, the bias is for a continuation downward.
Why does the prior trend tend to win? Because consolidations are more often pauses than reversals. A symmetrical triangle in the middle of a strong uptrend is usually just buyers and sellers catching their breath before the next leg. That is not a guarantee. It is a statistical lean. The trade-off is that this lean is weaker than the lean in ascending or descending triangles, because the symmetrical shape itself does not encode a winner. The prior trend is the only edge the shape offers you.
One more honest note. Symmetrical triangles are some of the most over-fit patterns in trading. People draw them on charts where two random swings happened to slope toward each other and call it a triangle. The genuine version needs at least two clean touches on each side and a clear prior trend leading into it. If you cannot identify the prior trend, you do not have a continuation setup. You have a range, which is a different thing entirely.
Recap: symmetrical triangle is two converging diagonals with no built-in bias. The prior trend is the only directional clue the shape gives you. The closer to the apex, the less useful the breakout. Two clean touches per side or it is not a triangle.
Knowledge check
Answer before moving on.
1. Where does the directional bias of a symmetrical triangle come from?
2. Price travels almost all the way to the apex without breaking out. What does that tell you?
3. You spot a symmetrical triangle but cannot identify a clear trend leading into it. What do you have?
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