trianglePattern

The Triangle Pattern connects four swing points (A, B, C, D) to form a contracting or expanding triangle. Traders use it to anticipate breakouts because price tends to coil inside the triangle before moving strongly in one direction. It can appear as ascending, descending, or symmetrical.

Syntax

trianglePattern(pointA, pointB, pointC, pointD, styles?)

Parameters

pointA (PricedData) · First anchor, starting the triangle. pointB (PricedData) · Second anchor, forming the opposite side. pointC (PricedData) · Third anchor, continuing the structure. pointD (PricedData) · Fourth anchor, completing the triangle. styles (TrianglePatternStyleOverrides) · Style and visual options:

• fillBackground (boolean) · Fill the inside of the triangle.

• transparency (number) · Background transparency (0–100).

• showLabels (boolean) · Show point labels (A, B, C, D).

• line (LinesLevels without coeff) · Style for triangle edges (linestyle, linewidth, color).

• background (RGBAColor | BaseColors) · Color for the inside area.

Return Value

(string) · The drawing ID of the created Triangle Pattern.

Example

Every 70 candles, a triangle is drawn using four pivots that outline consolidation.

//@version=1
init = () => {
  indicator({ onMainPanel: true, format: 'inherit' });
};

onTick = () => {
  if (index % 70 === 0) { // draw every 70 bars
    // 1) Define four anchors
    const A = newPoint(time(90), high(90));
    const B = newPoint(time(75), low(75));
    const C = newPoint(time(50), high(50));
    const D = newPoint(time(30), low(30));

    // 2) Define style
    const style = {
      fillBackground: true,
      transparency: 80,
      showLabels: true,
      line: { linestyle: 0, linewidth: 2, color: color.orange },
      background: color.rgba(255, 165, 0, 0.2)
    };

    // 3) Draw Triangle Pattern
    trianglePattern(A, B, C, D, style);
  }
};

Tips

• Works best when price contracts into the triangle before a breakout.

• Use it alongside volume analysis — volume often drops during consolidation and spikes on the breakout.

• Ascending triangles usually break upward; descending ones often break downward.

Warning

• Avoid drawing triangles on random swings — the structure must clearly form converging or diverging trendlines.

Good Practice

• Keep your style consistent across patterns so they’re recognizable at a glance.

• Combine triangle patterns with support/resistance zones to filter false breakouts.