Question 13
AI reconstruction. Predict the unfolded sheet. Reconstructed precise folding conditions: start with a square, fold the bottom half upward along the horizontal midline, then fold both lower corners of the resulting rectangle inward along the diagonals from its upper corners to the lower-edge midpoint. The final stack is a downward-pointing isosceles right triangle. Cut a half-square notch on the left folded diagonal and a semicircular notch on the right folded diagonal, through every layer, as shown. The square notch is oriented to produce an upright square when reflected across its fold. Unfold without rotating the sheet.
