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 454
he two following problems. Peoblem 190. From the given plan of a square to determine itselevation. Eig. 231. Let ahdc be the horizontal projections of the corners of thegiven square. From a draw a line perpen-dicular to ac and equal to it in length,as ad. Erom «. on ad set off dis-tances equal to… … Fig. 231. 434 SOLID GEOMETRY CHAP. XXXII Note.—If two lines of equal length meet in the same point,their projections on two planes perpendicular to the plane con-taining the two lines, and forming the same angle with eachother as the angle contained by the two lines, will have thefollowing…
Geometrical drawing
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