An example to understand CHANNEL PATTERN.

Channel patterns and triangle patterns just consist of support and resistance lines.
In a channel pattern, support and resistance lines are "parallel".
For a resistance or support line to be valid or strong there should be at least 3 touchpoints.
In the given chart, there are more than 4 points each that touch the resistance line and support line.

• 
  

In all 3 situations, the volumes should be more than avg 10-day volume.