Quarter-fold a paper square (left onto right, top onto bottom) and then fold the small square along its diagonal, lower-left half up. One round hole is punched right on the slanting folded edge and a square hole inside. Which figure shows the opened square?

Question

Accepted Answer

(b). The hole on the slanting crease stays single when that fold opens; the square gets a twin across it. The quarter folds then copy everything into all four quarters: four round holes and eight squares: (b).

Quarter-fold a paper square (left onto right, top onto bottom) and then fold the small square along its diagonal, lower-left half up. One round hole is punched right on the slanting folded edge and a square hole inside. Which figure shows the opened square?

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