Penultimate Unit: 120° angle for hexagonal faces

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This variant of the unit results in 120° angles where the units meet. The construction is approximate, but good enough for practical purposes. There is no solid composed entirely of regular hexagons, so you will have to mix units of this type with units that use other angles. Also note that you can have two different angles at the two ends of a single unit. Some models that use the 120° angle, for inspiration:

See other sections of this tutorial for instructions on folding and connecting other variants of this unit.

Step 1
1. Start with the 108° unit (instructions here)
Step 2
2. Unfold the small triangle
Step 3
3. Bisect the 45° angle
Step 4
4. Repeat behind. The unit is ready.