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 71
sectedby OG. Bisect the angle EOG by OL, meeting EA in L,and let OG cut EA in M; then OL = OM. In OA and OE take OP and C<2 equal to (9Z or6W. Then PM, ML, and Z<2 are three sides of thepentedecagon. Treating similarly the angles A OB, BOC, COD,and DOE, we obtain the remaining sides of the… … Fig. 40. The initial line being a, and d the common difference,the series is a, a-\- d, a -\- 2d, a -4- 3d, etc. 103. The portions of the horizontal lines to theright of the diagonal also form an arithmetic series, PAPER FOLDING 53 but they are in reverse order and decrease with acommon difference.…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
