ten little fingers - arvind gupta (4 mb pdf)

Knotty Pentagon1. Take a long rectangular strip ofpaper and tie the two loose ends intoan ordinary knot.2. Gently pull theends to tighten theknot.Regular Hexagon3. Tighten the knotand crease well andyou will be surprisedto see...4. a regularPENTAGON.1. Fold a rectangularsheet of paper intohalf.2. Fold the doubled upstraight edge into threeequal parts of 60 degreeseach. Crease wellHexagonal Cobweb3. There will be 6layers of paper onthe top corner. Foldit into a triangle4.On opening youwill see a regularHEXAGON in themiddle.5. If you make several parallelcreases at the top corner then....Octagon6. On opening you will see a set ofnesting hexagons resembling a cobweb.1. Fold a sheetof paper into halfand then...2. into aquarter.3. Crease the 4fold corner againinto a triangle tomake 8 folds.4. Crease the8 fold cornersharply.5. On opening youwill find a regularOCTAGON in thecentre.Sum of the angles of a triangle equal two right angles.1. Cut a triangle from apieceof paper. Fold the top tomeet at the base as shown.2. Fold the left andright angles too.3. The three angles of the triangle canbe folded to form a 180 degreeangle. The three angles when placedlike this make a straight line.