Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 135
h the given line pierces each of these planes (§78). If the givenR line pierces the solid, two of the points deter-mined above will liewithin the limits of theprojections of the solid.They are the requiredpoints. When the givensolid is so placed thatthe traces of the bound-ing lines fall outside… … Fia. 116 VI, § 104] POINTS, LINES, AND PLANES 117 Pass the H projecting plane, R, through ah. The traces ofthe lines 1-4, 2-4, 3-4 on R are at once apparent on plan, atc», d*, e*. The V projections of c, d, and e are found by projecting up-ward from c*, dh, e*, to the lines l-4, etc. The line of…
Geometry, Descriptive
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