Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 125
e X is takenthrough A and perpendicular to H. Planes X and Q intersectin the line B. The projections Av and B intersect in cv, oneprojection of the required point. The projections Ah and Bh arecoincident, so that their intersection is indeterminate. Conse-quently the projection ch must be located…
Geometry, Descriptive
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