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 54
The larger pentagon divided by the smaller = MJV2 : £^2= 2 : (7 — 3l/5)= 1 : 0.145S98 78. If in Fig. 27, angles QEK and LFQ are madeequal to ERQ or ^(/P, K, L being points on the sidesQR and £P respectively, then EFLQK will be a reg-ular pentagon congruent to the inner pentagon. Pen-tagons can be… … Fig. 29. Fold through the mid-points of the opposite sides,and obtain the lines A OB and COD. On both sides of AO and OB describe equilateraltriangles (§ 25), AOE, AHO; BFO and BOG. 36 GEOMETRIC EXERCISES Draw EF and HG. AHGBFE is a regular hexagon. It is unnecessary to give the proof. The greatest…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
