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 161
e1 -\- e~l) when x = 2c, y = — (/2 -\- e~2) and so on. 275. From the equatione can be determined graphically. ce—2yV~e-\- c = 0l/7= -(j+Vy 2—<?) 142 GEOMETRIC EXERCISES \/e=y + V f Vy2 — c2 is found by taking the geometric mean be-tween y -f- c and y— c. THE CARDIOID OR HEART-SHAPED CURVE. 276.… … Fig. 83. The equation to the curve is r = #(1 -f- cos #). The origin is a cusp on the curve. The cardioidis the inverse of the parabola with reference to itsfocus as center of inversion. THE LIMACON. 277. From a fixed point on a circle, draw a num-ber of chords, and take off a constant length on…
Geometry -- Study and teaching · Paper work
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
