Beginner Translation
Your legs become the lock. When the angle is right, the person on top has to tap or escape fast.
What It Does
The triangle turns guard into a direct submission threat and often chains naturally with armbars and sweeps.
Where You See It
You see it from closed guard, open guard setups, and partner drills focused on angles instead of squeezing.
Why It Matters
It shows beginners how powerful leg positioning can be and why small angle changes matter more than brute force.