Corrective Patterns: Zigzag, Flat, Triangle
Corrective patterns come in four shapes, and the shape tells you the character of the trend move that follows, which is why naming the pattern matters more than counting its insides. The last lesson built the A-B-C skeleton; this one fills in the faces it can wear. A sharp zigzag and a lazy flat are both corrections, both three waves, and they set up completely different next legs.
Why the Shape Changes the Meaning
The framework sorts corrections by how the crowd behaves inside them, and the internal wave count is how that behavior becomes visible. A correction that runs downhill in five-wave bursts means the counter-trend found real conviction, and the pattern is called a zigzag. A correction that drifts sideways in three-wave stumbles means the trend's opponents achieved nothing except wasting time, and the pattern is called a flat. A correction that squeezes inward leg by leg is a triangle, compression building toward release. Everything else is a combination of these, held together by connector waves.
Two corrections can retrace the identical percentage and mean opposite things. Depth answers how much was given back. Shape answers who was doing the giving, and how reluctantly. The trader who reads both questions gets a head start on the trend leg that ends the correction, because the correction's shape is a statement about the energy waiting on the other side.
The Zigzag: a Sharp 5-3-5
The zigzag is the aggressive correction: wave A breaks the prior trend in a five-wave drive, wave B rallies weakly in three, and wave C drives to the finish in five again. The internals are the signature, five-three-five, because zigzags happen when the counter-trend has real participation behind it. Wave B in a zigzag is characteristically shallow, commonly retracing a third to a half of wave A, occasionally more, and its weakness is the tell: the bounce that cannot even reach half way belongs to a market in a hurry to continue down.
Zigzags tend to travel far enough to look like new trends, which is precisely the confusion they create. The wave C decline in a strong zigzag slices through support levels that spectators assumed would hold, and the crowd concludes the old trend is dead just as the correction ends. Wave C typically equals wave A in points traveled, sometimes stretching to one and a half times A when the rejection is violent. The pattern ends abruptly: a zigzag does not wander near its low, it arrives, prints the final five, and hands the market back to the larger trend.
The Flat: a Sideways 3-3-5
The flat is the contest the counter-trend lost. Its waves run three-three-five: wave A is a three, not a five, and that single internal detail changes everything, because a three-wave decline means the selling never had full conviction. Wave B then recovers nearly everything A gave up, often ending close to where the correction started, and wave C drifts to a modest new extreme. The whole structure reads as a rectangle on a chart, and that is exactly what it is: a standoff that the larger trend eventually won.
The expanded flat is the version that deserves respect. In it, wave B pushes beyond the correction's starting point, above the old trend high in a bull market, printing what looks like a fresh breakout, and then wave C falls far enough to take out wave A's low by a wide margin. The expanded flat is the framework's most efficient trap: it recruits breakout buyers at B, exhausts them through C, and completes only after the last of them has been shaken out. When a false breakout at the highs is followed by a deeper-than-expected decline, the expanded flat is the first pattern to check.
The Triangle: Compression in Five Legs
The triangle is the only corrective pattern with five legs, labeled a through e, and every leg is a three. Price coils between two converging lines, each leg shorter than the last, volume fading as the coil tightens. Triangles appear most often in the wave 4 position, sometimes in wave B, and their message is consistent: participation is draining, both sides are exhausting themselves at shrinking prices, and the resolution will arrive not inside the pattern but as its exit.
The framework's most useful triangle statement concerns the thrust. The move that follows the final e wave usually runs in the direction of the larger trend and travels roughly the distance of the triangle's widest leg. The e wave itself is commonly about six tenths of the d wave, a Fibonacci relationship showing up exactly where impatience peaks. Triangles test traders differently from sharp corrections: the danger is not the drawdown, it is the boredom, and the four false exits inside the coil are where most accounts leak.
| Pattern | Internals | Character |
|---|---|---|
| Zigzag | 5-3-5 | Sharp, steep, conviction against the trend |
| Flat | 3-3-5 | Sideways standoff, B recovers nearly all of A |
| Expanded flat | 3-3-5 | B exceeds the start, C exceeds A's end |
| Triangle | 3-3-3-3-3 | Compressing coil, resolution on the break |
Complex Corrections: When One Shape Is Not Enough
Sometimes the market needs more time than any single shape allows, and the framework's answer is the combination: two or three simple corrections joined by connector waves, called X waves. A zigzag followed by an X rally followed by a flat is a double three. Add a third and it is a triple three. The parts are ordinary; the combination exists to stretch the correction across more time and more price without breaking the rules of any single part.
Combinations announce themselves by repetition. The market makes one complete correction, bounces meaningfully, makes a second complete correction of a different shape, and still has not reclaimed the trend. The crowd reads the second low as the real bottom because the first one already looked like one. The framework reads the X wave as a connector, not a turn, and expects the final part of the combination to finish where time and proportion, not hope, run out. Combinations end the same way simple corrections do: when the larger trend reclaims price with participation.
A Worked Example: One Top, Three Reads
Return to the hypothetical instrument from the previous lessons, invented numbers throughout, the advance that topped at 154. The correction that followed was first counted as a plain A-B-C: wave A declined to 134 in five waves, wave B rallied to 144, recovering half of A in three, and wave C declined to 124 in five, matching A point for point. That reading is a textbook zigzag, and its message was urgency: the counter-trend had real force, and the trend that follows should be expected to answer with equal force.
The same top supports two other honest readings, and comparing them is the lesson. Read as an expanded flat, the structure runs a three-wave A down to 132, a B that rallies through the old top to 157, and a C that falls to 126, past A's end, a longer and more humiliating path that recruits far more trapped buyers on the way. Read as a triangle inside wave 4 instead, the sideways stretch between 156 and 134 coils through five legs: a to 140, b to 148, c to 138, d to 145, e to 139, each leg shorter than the last, and the thrust out of the e wave low travels roughly the widest leg's sixteen points, landing within a point of the wave 5 top at 154 that actually printed. One top, three readings, three different characters. The framework's answer is not to guess but to hold the readings side by side, let the rules eliminate the dead ones as price develops, and trade the character the surviving shape implies.
Blunt version: the pattern you name is a forecast of temperament, not of ticks. Zigzag, expect violence after; flat, expect grinding; triangle, expect the exit to be the trade.
The triangle's exit is the trendline break lesson applied to a coil: the boundary breaks when the answer is due.
Trading the Shape You Named
Each shape carries a practical playbook. In a zigzag, entries wait for the C wave's own five-wave completion, because the pattern's violence punishes early longs; the reward is entering the resumed trend near its exact origin. In a flat, entries come earlier and smaller, because the pattern's risk is time as much as price, and the expanded flat's B high is the level that, if broken with participation, proves the larger trend reasserted. In a triangle, the trade is the thrust: position after the e wave completes or on the break of the coil's boundary, targeting the widest leg's distance, with the apex of the converging lines acting as a clock that says the answer is close.
Complex corrections trade the worst of all worlds and should usually be sat through rather than traded. Their internal X-wave rallies look like trend resumptions precisely because they are three-wave bounces of real size, and the framework's guard is the same as ever: a three cannot be the start of the new trend, because trends begin with fives. Name the shape, respect what it says about the crowd, and let the character of the correction set the character of the plan.
Corrective Pattern Questions
How do I tell a zigzag from a flat in real time?
Watch wave A's internals, not its depth. A five-wave A announces a zigzag and warns that wave C will be fast and deep; a three-wave A announces a flat and warns that the correction will burn time sideways. The first three or so swings of any correction usually expose which animal you are in.
Are triangles only found in wave 4?
Mostly, but not only. Wave 4 is their favorite seat, wave B is the second, and they appear as legs inside complex corrections. A triangle as wave 2 is rare, because second waves tend to be sharp rather than compressive, and a triangle needs a preceding trend leg long enough to coil against.
What is an expanded flat, in one sentence?
A sideways correction whose B wave breaks the old trend high and whose C wave breaks wave A's low, trapping the breakout crowd at the top and shaking out the bottom callers at the end. It is the pattern behind most false breakouts that actually go somewhere.
When does a correction become complex?
When one simple shape runs out of room to say what the market needs to say, and a second complete correction begins after a meaningful connector rally. The tell is repetition: two finished-looking corrections, neither followed by a five-wave trend resumption, means the combination is still mid-sentence.
The pattern shapes are the correction's vocabulary, and one discipline holds the whole structure together: the laws that decide when a count is simply wrong. The next lesson takes the framework's three unbreakable laws, states exactly what each one protects, and shows what a broken law actually proves about the degree you are counting.