ABSTRACT

A list of pertinent folding construction methods and references would include the following: binary folding algorithm [Lang 10, p. 6]; binary approximation [Brunton 73, p. 26; Lang 10, p. 6]; error-halving approximations [Brunton 73, p. 26; Fujimoto and Nishiwaki 82, p. 170; Hilton and Pederson 83; Hull 06, p. 15; Veenstra 09]; crossing-diagonal methods [Fujimoto and Nishiwaki 82, p. 170; Lang 10, p. 13]; Fujimoto-Mosely method [Fujimoto and Nishiwaki 82, p. 170; Lang 10, p. 17]; Noma method [Lang 10, p. 19]; continued fractions [Lang 10, p. 24]; equilateral triangle

variation [Fujimoto and Nishiwaki 82, p. 170]; the Haga theorems, noteworthy here for their use of a folded flap [Haga 08, pp. 1-32; Hull 06, p. 75; Lang 10, p. 21]; and traditional folds [Lang 10, p. 28; Row 01]. Several of these methods resemble in some aspects the constructions described in this paper. Only one construction is directly related: Row’s right triangle construction [Row 01, p. 23].