T. Sundara Row's geometric exercises in paper folding. Edited and rev. by Wooster Woodruff Beman and David Eugene Smith (1901)
Sundara Rao, Tandalam, 1853-, Beman, Wooster Woodruff, 1850-1922, Smith, David Eugene, 1860-1944 · Chicago Open Court Pub. Co · leaf 68
Fig. 37- Let YO, and XO produced meet XC, and YD in Cand D respectively. Divide the angles XOC and DOY into four equalparts by HOE, KOF, and LOG. Take Otf, OK, OL, OE, OF, and OG equal toCFor CX Join X, H, K, L, C, D, E, F) G, and Y, in order. IN PAPER FOLDING As in § 60, Z YOX=\ of a rt. / =36°. 49 … Fig. 38. By bisecting the sides and joining the points thusdetermined with the center, the perigon is dividedinto sixteen equal parts. A 16-gon is therefore easilyconstructed, and so for a 32-gon, and in general aregular 2-gon. IX. THE PENTEDECAGON. 101. Fig. 39 shows how the pentedecagon is…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
