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 416
itscentre being 2| vertically below I. Determine the plan of theintersection and the elevation on an xy parallel to ac. 2. A quadrilateral a.^b.^c^d^, with the diagonals ac, bd, is the plan of an irregular pyramid; ab=$, bc — ^, ac = 4^, cd=T,,and ad= 2^. A circle, diameter 2, with its centre on ac… … 2 D 402 PRACTICAL SOLID GEOMETRY chap. 324. Problem. — To determine the projections of theintersection of two surfaces of revolution given in eleva-tion, the axes of which intersect each other and areparallel to the vertical plane, one being vertical. The given surfaces are generated by the…