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 23
can be made equal in size to the page bytaking a larger piece of paper and measuring off ABand BC equal to the sides of the latter. 4 GEOME TRIC EXERCISES 8. A figure like this is called a rectangle. Bysuperposition it is proved that (1) the four angles areright angles and all equal, (2) the four… … Fig. 5- falls upon one of the longer sides, DA, as in Fig. 4.Then fold and remove the portion ABBA whichoverlaps. Unfolding the sheet, we find that ABCDis now square, i. e., its four angles are right angles,and all its sides are equal. 10. The crease which passes through a pair of the IN PAPER…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
