A complex circle containing two overlapping triangles, one triangle containing three tetrahedrons.  Five triangles surround both larger triangles.

A complex circle containing two overlapping triangles, one triangle containing three tetrahedrons.  Five triangles surround both larger triangles.

A complex circle containing two overlapping triangles, one triangle containing three tetrahedrons.  Five triangles surround both larger triangles.

A complex circle containing two overlapping triangles, one triangle containing three tetrahedrons.  Five triangles surround both larger triangles.