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 374
her methods require only circles and straightlines to be drawn. Example.—Draw a line inclined at 6o° to xy, in which take apoint a 1 from xy, and another point b 2^ from xy ; thisis the plan of a line AB, whose ends A and B are 3 and 1above the ground. Describe a circle Ij diameter, with itscentre… … 360 PRACTICAL SOLID GEOMETRY chap. 296. Problem. — To determine the traces of a planewhich shall touch a given cone, axis VA, and pass througha given external point P. First Method.—This problem may be at once reduced tothe preceding one, since the required plane must containthe line joining the…