Question: To line the square muffin pan with parchment paper so that paper can line the pan exactly.
Option 0: Measure the depth and side of the inside of the squares. Cut the parchment paper into squares with the length equivalent to 2 depths plus 1 side. Fold it up at the length of the depth on all 4 sides. Cut away the overlaps at the corners.
Option 1: Measure the depth and side of the outside of the squares. Cut the parchment paper into squares with the length equivalent to 2 depths plus 1 side. Fold it up at the length of the depth on all 4 sides. Cut away the overlaps at the corners.
Answer: 0