Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 221
rendering the solu-tion tedious, but a solution- isalways possible according to thegeneral principles explained in§149. 178. To Draw the Projectionsof the Serpentine. The serpen-tine is a surface generated by asphere which moves so that itscenter follows a given helicaldirectrix.Figure 186 shows… … VIII, § 178] CURVED SURFACES 203 EXERCISE SHEET LXXII> 1. The point a (66, 12„12) is the center of a sphere 2i in diameter.Locate the point 6, which hes on the surface of the sphere, 2| aboveH and 2 in front of V. Through 6 draw a diameter of the sphere.Call its opposite end c. Through 6 draw a…
Geometry, Descriptive
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