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 21
and fold it flat upon itself. Let X Xbe the crease thus formed. It is straight. Now passa knife along the fold und separate the smaller piece.We thus obtain one straight edge. 5. Fold the paper again as before along BY, sothat the edge XX is doubled upon itself. Unfoldingthe paper, we see that the… … Fig. 3- a knife as before along the second fold and removethe smaller piece. IN PAPER FOLDING 3 6. Repeat the above process and obtain the edgesCD and DA. It is evident by superposition that theangles at A, B, C, D, are right angles, equal to oneanother, and that the sides BC, CD are respectively
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
