How to teach paper-folding and cutting: a practical manual-training aid (1892)
[Litchfield, Norma MacLeod] [from old catalog] · Lebanon, Ohio, March brothers · leaf 22
length, the triangle would be equilateral. When youhave cut and opened the octagon, let the pupils countthe number of triangles forming it. LINES AND ANGLKS. 19 … Tiq.K.17. 20 PAPER-FOLDING AND CUTTING.
Paper work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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