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| Finished unit. Make 3. | Reverse side showing two pockets. | Open the unit a little and fold out the tabs. |
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| Insert a tab from unit 2 into the top pocket of unit 1. | Unit 2 inserted. | Insert a tab from unit 3 into the top pocket of unit 2. |
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| Unit 3 inserted. | Tighten up the flaps and you'll see the triangle shape. Fold the sides of the units in to complete the shape, tucking the tabs into the pockets. | |
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| The last tab being inserted into a pocket. | Completed Polyhedra Sonobe Module. |
