Trend lines are drawn on charts to help predict the general direction of price.It also help to determine good entry and exit point.they also help to see the reversals.
A straight line at a time becomes a curve line composed in the direction of the graph and shows the main direction of movement of the stock in a certain period of time. In fact, the majority of technical analysts draw trend lines by linking the lowest points in stock prices, as we will explain through the following pictures, because technical analysts sometimes use statistical methods such as moving averages.