Arm-in triangle (from front headlock)

Arm-in triangle (from front headlock) is the descriptive name for the D’arce choke when framed structurally as an arm-in triangle entered from the front-headlock position.

Etymology. “Arm-in triangle” specifies the triangle-shape geometry and the trapped-arm element; “(from front headlock)” specifies the position context. The label flags the structural relationship to other triangle-family chokes while distinguishing the front-headlock entry from leg-triangle variants.

Mechanics. The arm-thread closes a triangle around the neck and the trapped arm — bilateral compression follows from the closed loop and the chest-to-back connection.

Cross-reference. “D’Arce choke” is the standard name; “anaconda” and “brabo” are related arm-in-strangle variants. Full mechanical coverage on D’arce Choke.