Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 244
ce plane Z contains two elements ofthe cone, the construction locates two points, 11 on element0-1 and 15 on element 0-5. But the planes Y, M, and X areso situated that in attempting to find their lines of intersectionwith Q, only one point in each line can be found within thelimits of the figure,… … im [Q, 303 section A, B, C, etc., will have their H-projections coincidentwith HX, IIY, IIZ, etc., respectively. But the lines of inter- 224 DESCRIPTIVE GEOMETRY [XXII, § 180 section A, B, C, etc., are all lines in one plane, namely, theplane Q. Now if a number of lines known to be in the sameplane…
Geometry, Descriptive
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