How to teach paper-folding and cutting: a practical manual-training aid (1892)
[Litchfield, Norma MacLeod] [from old catalog] · Lebanon, Ohio, March brothers · leaf 80
Tt.g. J^^c. //^. … 78 PAPER-FOLDING AND CUTTING. dotted lines. As all three sides of these triangularbases are equal, the prism may be described as anequilateral triangular prism. All triangular prisms
Paper work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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