Jopling, Joseph, Gladwin, George, fl. 1821-1838 · London : M. Taylor · leaf 70
64 ISOMETRICAL PERSPECTIVE. the triangle of 30°, 60°, and 90°, and a parallel ruler, without altering the direction of the latter; or all the Fig. 117. … boundary lines in the representation of a cube, as well as the diagonals, or any lines parallel to them. Fig. 118 represents the position of fig. 102, with respect to the plane of projection qp; the lines ab9 cd , and efy in the one corresponding with the lines distinguished by the same letters in…
Axonometric projection · Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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