

Quadrangular Prism and Triangular Prism, Etc.
Draw the diagrams in Fig. 26. Use heavy ledger paper or cardboard; if the latter, dent or slightly cut the dotted lines, as described in Fig. 14.
The Greek cross will fold into a cube.
The triangle will form a pyramid.
The parts marked "X" are to be covered with mucilage or paste for the purpose of fastening the adjacent surfaces of the solids.

Multi-Colored Book Covers
Book covers may be made by the same means used for producing the multi-colored cut-out pictures.