Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 452
he planesVTH, LMN; and draw pq parallel to rs to meet In in q.Project from q to q. Then Q is the intersection of the ray PQ and the planeVTH, and is the required shadow on the plane. (b) Draw ////;/ parallel to rs, and nil perpendicular toxy. Project from n to n ; join Iri. Draw pq parallel tors ;… … Note.—The problem of finding the intersection ofa given lineand planeis generally best solved by applying the construction of either (a) or (b). Examples on Problems 344 and 345. 1. A cone rests with its base on the ground ; diameter of base 2\, height 5. It is cut by a horizontal plane which…
