Requirements
- Rectangular piece of paper
- There's a way to do it with just one right-angled corner, but the procedure for that is more complex
- Minimum for this method is technically just two parallel edges connected by a perpendicular edge
- The length of the long edge is at least ${\frac{2}{\sqrt{3}} \approx 1.1547}$ times that of the short edge
Procedure
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1. Fold in half hotdog-style (along the long axis |
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2. Fold the top half in half once more to create a quarter reference line, using the initial fold as a reference |
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3. Fold the top right corner onto the quarter reference line, such that the fold line passes through the midpoint of the short edge |
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4. Fold the newly created fold towards the top edge |
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5. Create a marking fold where the top edge starts being visible from under the top flap 6. Fold the bottom left corner under the flap using the edge of the flap as a reference |
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7. Fold the top left corner under the flap using the half line as a reference 8. Make a mountain fold on the flap to match the fold in the previous step 9. Unfold the flap |
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(Final result) |