Fig. 22. Folding a cardboard box. a. The two long edges of a rectangular card are 



folded to meet in the center. 



Fig. 23. Folding a cardboard hoy.— (continued), b. Folds are flattened out and the 



short edges are folded not quite to the center. 







Fig. 24. Folding a cardboard box — (continued), c. Comers are folded over. 



