Zometool Geometric Construction Toy-Green Lines

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https://pse.is/76u7lw
The green line makes the Zometool even more versatile and sophisticated.
The green lines occupy the pentagonal (red) holes in the ball. But because of their design (double bend), each strut can go into the hole in five different ways, adding 30 new directions per ball!
The most basic way to describe the role of green lines and squares. The green lines are the diagonals between the corners.
Of course, this is just the beginning, and Green Line opens up a fascinating world of new architectural possibilities, including truncation, ruled surfaces, and some important basic shapes; for example, the 2 Platonic solids (tetrahedron and octahedron) can only be constructed correctly using Green Line.