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 58
three corners to the center. The side of the hexagon is 1 of the side of theequilateral triangle. 38 GEOMETRIC EXERCISES The area of the hexagon = § of the equilateraltriangle. 86. The hexagon can be divided into equal regularhexagons and equilateral triangles as in Fig. 31 byfolding through the… … Fig. 32. Bisect the angles which the sides of the inscribedsquare make with the sides of the other. Let the bi-secting lines meet in E. F, G, and H. 4o GEOMETRIC EXERCISES AEBFCGDH is a regular octagon. The triangles AEB, BEC, CGD, and DHA arecongruent isosceles triangles. The octagon is there-fore…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.