Support is stronger for prices when two support levels converge.
Fan Principle. Technical Analysis. When the third trendline is violated, the market will usually continue in the same direction vs. changing direction of trend. This is not a recommendation to buy or sell. This is solely for informational purpose. This is purely a description of a principle in technical analysis.
I have identified on this chart the intermediate and long term trend on the Nasdaq 100 Stock Index. This chart is only to highlight how high the rally has driven prices and the key trendlines and where the current price is in relation to the trends.