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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 79

An illustration from T. Sundara Row's geometric exercises in paper folding. Edited and rev. by Wooster Woodruff Beman and David Eugene Smith, 1901, leaf 79
ean between CD or AEand AB. Therefore AB is the harmonic mean between AXand AY. 122. The following is a very simple method offinding the harmonic mean between two given lines. 6o GEOMETRIC EXERCISES Take AB, CD on the edges of the square equal tothe given lines. Fold the diagonals AD, i?Cand… … Fig. 44. and BD in /and G. Then EG is the harmonic meanbetween AB and CD. EE CE ~AB~~CB EG EE EB~CB For and ^„ = -—— = CD EE~AB 1 + CD EE CD CB CE EB CB 2 ^ ^ CD EE EG IN PAPER FOLDING 61 123. The line HK connecting the mid-points of ACand BD is the arithmetic mean between AB and CD. 124. To find…

Geometry -- Study and teaching · Paper work

Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.

More pictures from T. Sundara Row's geometric exercises in paper folding. Edited and rev. by Wooster Woodruff Beman and David Eugene Smith

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