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 30
hall obtain an equilateral triangle(Fig. 10). This point is easily determined by turningthe base AB through one end of it, over A A, until theother end, B, rests upon the middle line, as at C.26. Fold the equilateral triangle by laying each IN PAPER FOLDING ii of the sides upon the base. We thus… … Fig. 11. 29. They pass through a common point. 30. Let the altitudes AA and CC meet in O.Draw BO and produce it to meet AC in B. BBwill now be proved to be the third altitude. Fromthe triangles CO A and CO A, OC = OA. Fromtriangles OCB and AOB, /_ OBC — lABO. Againfrom triangles ABB and CBB, /_ABB=…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
