A diagonal line can make random movement look orderly. That visual comfort is precisely why every candidate line needs a test before it earns a place.
1. Are the anchors visible without negotiation?
Use pivots another careful reader could locate without hearing your preferred market direction. If an anchor depends on ignoring the nearby extreme or selecting a minor candle inside a cluster, the line begins with discretion it may not deserve.
2. Is there meaningful distance?
Two adjacent lows can define a mathematical line while saying little about the rhythm of a move. Useful anchors are separated by enough time and price action for a distinct response to develop. The interval is contextual; the principle is not.
3. Does the line agree with structure?
A rising diagonal inside a broken bullish sequence should not overrule the break simply because price has not touched it. Read horizontal swing structure first. The diagonal describes pace; it does not grant a trend immunity.
When a line fails one of these tests, delete it and observe whether your decision changes. If nothing changes, the chart has become clearer at no analytical cost.
Keep studying: review the workshop briefs or send us a chart-reading question.