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 89
GEOMETRIC EXERCISES 7° the apothem evidently approaches its limit, the ra- dius. Thus the limit of l/2 + l/2 + \/2.... is 2; for if x represent the limit, x = l/2 -J- x, a quadratic which gives x = 2, or —1; the latter value is, of course, inadmissible. 133- If perpendiculars are drawn to the radii… … In Fig. 48, let AE be a side of the inscribed poly- gon and FG a side of the circumscribed polygon. Then from the triangles FIE and EIO, OF _ FE __ FG ~OI ~ E~I~ AE'
Geometry · Paper work
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