3 different ways to use the bank system in billiards 🎱 1. The Isosceles triangle - This system works by visualizing an isosceles triangle between the object ball, and your desired pocket. When the two long sides of that triangle are placed towards the pocket and above the object ball, the entry and exit angles mirror each other, giving you a predictable rebound toward the pocket. 2. Diamond system - Place your cue stick across the table above the object ball, or visualize it. Determine how many