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 14
uldgive them neat and accurate figures, and impress thetruth of the propositions forcibly on their minds Itwould not be necessary to take any statement on trust. INTRODUCTION. IX But what is now realised by the imagination and ideal-isation of clumsy figures can be seen in the concrete.A fallacy… … (1) If CO and ZO do not meet, they are parallel.Therefore CO is at right angles to AB. ThereforeAC=BC. (2) If CO and ZO do meet, let them meet in O.Draw OX perpendicular to BC and OY perpendicularto AC. Join OA, OB. By Euclid I, 26 (B. and S.,§ 88, cor. 7)* the triangles YOC and XOC are con- *…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.