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 362
races of the two planes which passthrough P and touch the cone. 2. Draw the projections of the line from P to touch the cone, so that the length from P to the point of contact is the leastpossible. 3. A sphere i\ diameter has its centre f above the ground, and 2\ in front of the vertical plane. A… … Draw the projections of the tangent line to the sphere at thepoint P in Ex. 3, such that it is inclined 300 to the ground. A cylinder iV diameter touches the ground along a generatorwhich makes 300 with the vertical plane ; determine the tracesof a plane which touches the cylinder at a point P, ij…
