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 240
193 … Then vt, drawn through 5, 15, is the vertical trace ofthe given plane as regards xy ; and p is the elevation ofthe intersection of the line and plane, as in Prob. 187. Project from / to determine the plan p. To findthe index of p, measure the height of/ above xy, or readthe position of q on the…
