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 51
GEOMETRIC EXERCISES 32 3 —1/5 f = A£*- 1 8 5 + 1/5 = A£* l/lO-f-21/5 p = AB ■ = ^^X 0.9510....=^^ cos 18°. … Fig. 28. 74. If i? be the radius of the circumscribed circle, ^.5 2,4.5 "2 cos 18° i/io + 2i/5 10 :^^X 0.5257....
Geometry · Paper work
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
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