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 318
, or by any other method.Obtain the point s as shown, and draw sd perpendicularto db and equal to dxB>Q. Then d is the elevation of D,and the elevation of the tetrahedron is completed by draw-ing the lines representing the edges. The plan is to be obtained as in previous problems, andis left as… … b. c> Examples.—1. Determine the plan of a hexagon of f side, whenthree alternate angular points are i, i|, and if high re-spectively. 2. Draw the plan of a square 2^ side, when the heights of its centre and two corners, not opposite each other, are i, if,and 2V respectively. 3. Draw the plan of…