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 24
t, 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 FOLDING opposite corners B, D, is a diagonal of the square.One other diagonal is obtained by folding the squarethrough the other pair of… … Fig. 6. 13. Each diagonal divides the square into two con-gruent right-angled isosceles triangles, whose verticesare at opposite corners. 14. The two diagonals together divide the squareinto four congruent right-angled isosceles triangles,whose vertices are at the center of the square. 6 GEOMETRIC…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
