The triangle choke is arguably one of the most effective chokeholds and certainly one of the more common submissions in Brazilian Jiu-Jitsu and mixed martial arts. It is incredibly effective as a counter-attack and, since it depends on the isolation of one of the opponent's arms, hand strikes all of a sudden make the striker vulnerable. Due to this, many MMA fans are incredibly familiar with this move because of its effectiveness.
As Sensei Nardu Debrah explains the technique, you should focus on the following key points:
To successfully complete this task, you must demonstrate the technique exactly as Sensei Nardu describes with your training partner in a controlled, safe environment. For bonus points, include video of yourself executing the technique during sparring / live rolling (note, this is optional and not required for you to pass this task).