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 151
GEOMETRIC EXERCISES 132 CD:CF=OC:CD . . OC:CD = CD:CF=CF:CE . ■. CD and CF are the two geometric means be- tween OC and CE. … 264. The cissoid was invented by Diocles (second century B. C.) to find two geometric means between two lines in the manner described above. OC and CE being given, the point P was determined by the aid of the curve, and hence the point D. 265. If PD and DR are each equal to OQ, then the angle AOQ…
Geometry · Paper work
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