Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 133
t:> iy(X CONIC SECTIONS. 119 till it meets the generating circle in /. Join /A. With / ascentre, and radius equal to /A, draw an arc intersecting AB at … Fig. 234. w. Join tu>\ and produce it to w.tangent rs is at right angles to it. This is the normal. The 170. To draw a hypocycloid. Let AB be the director, which is the arc of a circle, and pthe generator, which is a point in the circumference of theroUing circle M. Make A/j equal in length to…
Geometrical drawing · Design · Drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
