Alias · Triangle system
Opposite arm triangle
Also known as Opposite-Side Triangle — the canonical term used on this site.
Training background: descriptive
Descriptive — triangle off the opposite arm
Opposite arm triangle is a descriptive name for the opposite-side triangle — naming it by the opposite arm the triangle is angled across to.
Etymology. “Opposite arm” specifies the side the legs close toward, away from the trapped limb; “triangle” names the strangle. The label foregrounds the arm reference where “far-side” names the angle.
Mechanics. Closing across to the opposite side wins the inside angle on the neck, and inside position controls the outside: angling the legs to the far side puts the strangle on the inside line of both carotids, so the opponent cannot posture out of it the way they could escape a shallower, same-side lock that sits outside the controlling angle.
Cross-reference. “Far-side triangle” is a sibling alias. Full mechanical coverage on Opposite-Side Triangle.