Bob folds a piece of paper, then punches a hole into the paper and unfolds it again. The unfolded paper then looks like the picture below (see diagram). Along which dotted line has Bob folded the paper beforehand?
Bob folds a piece of paper, then punches a hole into the paper and unfolds it again. The unfolded paper then looks like the picture below (see diagram).  Along which dotted line has Bob folded the paper beforehand? Origami problem – spatial sense - candidate answer list

Origami problem – spatial sense

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