T. Sundara Row's Geometric exercises in paper folding; (1901)
Sundara Rao, Tandalam, 1853-, Beman, Wooster Woodruff, 1850-1922. ed, Smith, David Eugene, 1860-1944. ed · Chicago, The Open Court Pub. Company; [etc., etc.] · leaf 165
to the circumference of the circle. The circumference of a circle may be obtained in length in this way. Wrap a strip of paper round a circular object, e. g., the cylinder in Kindergarten gift No. II., and mark off two coincident points. Un- fold the paper and fold through the points. Then the… … Bisect AA' in D and draw DB at right angles to AA', and equal to the diameter of the generating circle. Then A, A' and B are points on the curve. Find 0 the middle point of BD. Fold a number of radii of the generating circle through O dividing the semi-circumference to the right into equal arcs,…
Geometry · Paper work
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
