
Trendlines are used in technical analysis to define an uptrend or downtrend. Traditionally, uptrend lines are made by drawing a straight line through a series of ascending higher troughs (lows). A trend line could also be called a ‘trend support line’ because it shows the direction of a trend, and it acts as a support line, similar to that discussed in the introduction to support and resistance section... find out more in our Trendlines guide.
