ABSTRACT
This chapter presents many other ways of laying out fold lines for various structures together with the resulting shapes. Connecting or changing these shapes helps to create a variety of shapes. Same-shaped curves need to alternate between mountain and valley when aligned. However, a less bent, almost linear curve can break this rule. Aligning in a sequence of valley, mountain, mountain, and valley makes a projection on the surface. On the backside, it looks like a groove. Fold lines can meet at the center of the paper, allowing them to be freely laid out without affecting each other. Grooves like this may replace the tucking explained. In the fold lines are arranged so that they extend radially from the center. To neatly fold a closed looping back curve, make a hole in the center. As curves wind sharply after folds, the folded shapes will be greatly distorted.
