A trendline connects rising lows in an uptrend or falling highs in a downtrend, acting as diagonal support or resistance. Two points draw it, but a third touch is what makes it evidence rather than a guess. A channel adds a parallel line on the other side of price, showing how wide the trend usually runs.
A trendline connects rising lows in an uptrend, or falling highs in a downtrend.
It is the same idea as support and resistance from Part 5 — a price area where participants have acted before — except the area moves as time passes.
Why a level would move
In a trend, buyers are willing to pay progressively more. So the price where they step in is not a fixed number; it rises with each pullback.
Drawing a horizontal line under a rising market would put it in the wrong place almost immediately. A tilted line follows.
How to draw one
In an uptrend, connect the dips (swing lows) with a line beneath price. In a downtrend, connect the peaks (swing highs) with a line above price.
Three rules keep it honest.
On rule three: wicks include the full extreme, so lines drawn on them break more often on single spikes. Bodies ignore those spikes and give steadier lines. Either is defensible. Switching between them to make a line work is not.
Two points draw a line. Three make it evidence.
This is the part beginners skip, and it matters more than the drawing technique.
Any two points can be connected by a line. That is geometry, not analysis. A two-touch trendline is a guess with a ruler — it says if this rate of advance is real, price should react here again.
The third touch is the first evidence that the market is actually respecting it.
This rule exists because trendlines are the easiest tool to fool yourself with. Given enough candles and freedom in choosing endpoints, a line can be drawn to support almost any view. Requiring three touches is the discipline that stops it.
Channels
A channel is a trendline plus a parallel line on the other side of price.
Draw the main line first, on whichever side has the cleaner touches. Then copy it — same angle — across to the opposite extreme.
A channel gives you two things a single line cannot:
A width — how far the trend usually travels before pulling back, which makes targets realistic rather than hopeful.
Two zones — the lower boundary as a buy area in an uptrend, the upper as a place to take profit. That is a defined risk-reward setup instead of an open-ended trade.
Key takeaway Buying at the top of a rising channel is buying where the trend has historically paused. It feels safest there because the move looks strongest — which is exactly why beginners do it. The buy area is the bottom.
What a break actually means
A trendline break means the speed changed. Not that the trend ended.
Very often price breaks a steep line and keeps rising along a shallower one. The trend is intact; only its rate changed.
Whether the trend has truly ended is a question about swing structure — whether the sequence of higher highs and higher lows broke. That is Part 7, and it is the more reliable test.
Steepness is information
A trendline’s angle tells you something on its own.
Very steep lines break early. They describe a pace no market sustains, so the break usually signals a return to normal speed rather than a reversal.
A trend that keeps steepening — each new line sharper than the last — is accelerating. That is when volatility rises, and it is worth rechecking position size: the same number of lots carries more risk in a faster market.
A flattening series of lines describes a trend running out of momentum — often the transition into the sideways condition from Part 4.
Next: Swing highs and lows — the objective structure that trendlines only approximate.
- An uptrend line connects rising swing lows and sits beneath price.
- A downtrend line connects falling swing highs and sits above price.
- Two points draw a line; the third touch is the first real evidence.
- A trendline break means the rate of advance changed — not necessarily that the trend ended.