Three identical rectangular frames,
each frame framing the other two.
The beams have a square-root-2 rhombus as cross section,
such that cutting them at 45 degrees yields a square cut face.
The convex hull is an octahedron.
This shape can be considered a degenerate form of the Informatics Trophy.
Compare to [ Trinity II | Trinity III ]
The original is in three types of wood.
Designed by Koos Verhoeff (1980s).