A sheet is folded along the dotted lines and a piece of paper is cut from the folded sheet, as shown in the problem figures. Which is the correct figure after unfolding the sheet?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) →
When a folded sheet is opened, each cut is repeated as its mirror image across every fold line. The sheet was folded along both diagonals into a quarter, and the cut was made in the bottom quarter. Opening the second fold copies it into the left quarter; opening the first fold copies both into the right and top quarters. So the opened sheet has one cut in each quarter, near its outer edge, with no cut touching another.
