Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 399
plane passing through an element is a ree-tangle. Ex. 1372. In the figure of Prop. II, the radius of the base is 4 inches,element CF is 12 inches, CD is 1 inch from the center of the base, and CFmakes with CD an angle of 60^ Find the area of section CDEF. Ex. 1373. Every section of a cylinder,… … Conical Surface 837. Def. A conical surface is a surface generated by amoving straight line that continually intersects a fixed curveand that passes through a fixedpoint not in the plane of thecurve. 838. Defs. By referring to§§ 693, 694, and 746, the stu-dent may give the definitionsof generatrix,…
Geometry, Plane · Geometry, Solid
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