If we take this trend line theory one step further and draw a parallel line at the same angle of the uptrend or downtrend, we will have created a channel. To create an up (ascending) channel, simply draw a parallel line at the same angle as an uptrend line and then move that line to position where it touches the most recent peak. This should be done at the same time you create the trend line. To create a down (descending) channel, simple draw a parallel line at the same angle as the downtrend line and then move that line to a position where it touches the most recent valley. This should be done at the same time you created the trend line. When prices hit the bottom trend line this may be used as a buying area. When prices hit the upper trend line this may be used as a selling area.