How to teach paper-folding and cutting: a practical manual-training aid (1892)
[Litchfield, Norma MacLeod] [from old catalog] · Lebanon, Ohio, March brothers · leaf 96
% jic. /jr 135 and 136 are represented respectively frustums ofa square prism and a hexagonal prism. The upper … R.-Nc/ef^- face of a frustum is the same shape as the base of thepyramid, but, as a matter of course, is smaller. The 94 PAPER-FOLDING AND CUTTING. nearer the top of the pyramid the cutting is made,the smaller is the upper face. By examining thediagram shown in figure No. 137 you will see…
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