Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 329
3 or84), Draw the line nk 3f long, 1 above XY, and parallel to it.This is the V.T. of plane H. Let fall projectors from n and Jcat right angles to XY, and produced 2J below it, to the points?z, and h Join %/»;. Where the line nk intersects the line G iny, draw the perpendicular gg. Draw the line gh… … - ^ Fig. 118,
Geometrical drawing
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