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 42
Fig. 19. Z ABN= 2 / NAB. ANi = MN2-\-AM2 = ^2 and IN PAPER FOLDING .-. AN=AB /_NAB = \ of a right angle. 23 61. The right angle at A can be divided into fiveequal parts as in Fig. 20. Here N is found as in§60. Then io\& ANQ; bisect iQAB by folding, … Fig. 20. fold over the diagonal AC and thus get the pointQ, P- 62. To describe a right-angled triangle, given thehypotenuse AB, and the altitude. Fold EF (Fig. 21) parallel to AB at the distanceof the given altitude. Take G the middle point of AB. Find Hhy fold-ing GB through G so that B may fall…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.