Jopling, Joseph, Gladwin, George, fl. 1821-1838 · London : M. Taylor · leaf 49
ppear to be right angles. Figs. 64, 65, 66, and 67, are other representations of cubes cut by planes perpendicular to two faces, and at an angle of 30° with another face, as the letters, See., of reference will, it is hoped, fully explain. It may be necessary to remind the learner, that all these… … Fig. 68 represents a cube cut by a plane passing through c and d, and making an angle of 20° with the diagonal ad on one face of the cube, and being perpen¬ dicular to the diagonal plane a,d,f,g, which is inclined to the plane of projection. Make ab equal radius or one side of the hexagon, that is…
Axonometric projection · Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
