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 342
required. Problem 106. To determine the angle which a line inclined to hoth planes ofjjrojection loill make u-ith a given plane. Kg. 136. Let H.T. and Y.T. re-present the traces of thegiven plane, and ah, ah,the projections of the lineAB. Draw the lines cle andcVe perpendicular to thetraces: these… … Let the line eg represent 322 SOLID GEOMETRY chap. the axis of a cone, with c as vertex, and let cd be the H. pro-jection of a generatrix of the cone. We wish to rotate this line^^D till it is constructed on to the H.P. To do this, draw theline (ID perpendicular to dg, and equal in length to dd…
Geometrical drawing
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