Trendlines in Forex are straight lines drawn on price charts to visually represent the direction and strength of a currency pair's trend. Traders use trendlines to identify the overall market direction and potential entry and exit points for trades. An uptrend line connects higher swing lows, indicating a rising market, while a downtrend line connects lower swing highs, indicating a falling market. Trendlines can also act as dynamic support and resistance levels. When the price approaches a trendline, traders pay attention to potential trend continuation or reversal signals, such as price bounces or breakouts. Trendlines serve as essential tools for technical analysis, aiding traders in making informed decisions based on the prevailing market trends.