Triangle pattern
Construction types
A symmetrical triangle has a declining upper and rising lower boundary. An ascending version uses a relatively flat top and rising lows; a descending version mirrors it. Names and traditional directional interpretations do not establish global demand or supply dominance. Flatness tolerance and swing selection belong in the written definition.
Time and activation
The lines’ intersection is geometric, not an obligation to break out two-thirds or three-quarters through the structure. Specify minimum contacts, horizon and whether a wick or close activates the rule. Do not redraw lines after an unsuccessful break merely to keep all earlier reactions inside a convincing pattern.
Break, retest and projection
Height can define a reference measured move, depending on the measurement point. Immediate and retest entries have different prices and missed-trade risks. A retest is not inherently safer. Evaluate both breakout directions, failures, costs and swing availability rather than only textbook examples selected after the subsequent movement.