Line Studies, Fibonacci figure (Arcs, Fans, Retracements), Quadrant Lines, and Speed Resistance Lines are lines and various geometric figures that are plotted in price charts. They are used as analytical instruments helping to define channels, support and resistance levels and trend changes and to forecast price dynamics. The trendline is a straight line that connects two price points and depicts the general direction in which a security is headed. It extends into the future to act as a line of support or resistance.
