A B 1/4 C 1/2 C (1) Fold A to B (2) Mark point C at intersection (3) Cut along horizontal line through point C 47x60 rectangle 1.3% difference from letter size proportion (8.5x11) (4) Completed paper Making Letter Sized Proportion Rectangle from Square Method I Method II (1) (2) Bisect angle again A B C (3) Bisect AB to get C C D E F (4) Bisect DE to get F A A C D E F (5) Make crease passing C and E A C D EF (6) Crease passing AF; G is the intersection of AF & CE A C F E G (7) Cut along vertical line through point G (8) Completed 0.1% difference from letter size proportion G . point C 47x60 rectangle 1.3% difference from letter size proportion (8.5x11) (4) Completed paper Making Letter Sized Proportion Rectangle from Square Method. Cut along vertical line through point G (8) Completed 0.1% difference from letter size proportion G