Paper folding and cutting; a series of foldings and cuttings especially adapted to kindergartens and public schools (1892)
Ball, Katherine M · Boston, The Prang educational company · leaf 31
THE QUATREFOIL. Fold to Fig. 4, and draw onthe fold a semicircle, and cut fromI to 2. Point I is the tangentialunion of the semicircle and theline 3-4. THE OCTAFOIL. Fold to Fig. 5, and draw onthe fold a semicircle, and cut fromI to 2. Point 2 is the tangentialunion of the semicircle and theline…
Paper work
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