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 26
it; (5) each of these rectangles is equalto one of the triangles into which either diagonaldivides the square. 16. Let us fold the square again, laying the re-maining two sides one upon the other. The crease IN PAPER FOLDING 7 now obtained and the one referred to in § 15 dividethe square into four… … Fig. 8. 18. This square is half the larger square, and hasthe same center. 19. By joining the mid-points of the sides of theinner square, we obtain a square which is one-fourthof the original square (Fig. 8). By repeating the pro-cess, we can obtain any number of squares which areto one another as…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
