Examples of (symmetric) Interlocked 3 By 1 Triangles:   dancers work together and dancers work together in a 3 By 1 Triangle

As with 3 By 1 Triangles, Interlocked 3 By 1 Triangles are usually a Generalized Tandem-Based Triangle instead of Wave-Based Triangle.

before Interlocked 3 By 1 Triangle Circulate   after

before (Facing) Interlocked 3 By 1 Triangle Circulate   after

Typically the only calls done from (Interlocked) 3 By 1 Triangles are Circulate,Funny Circulate, and Reshape.

See also 3 By 1 Triangle FORMATION [C2].