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 382
ane (Prob. 83 or 84). First assume a vertical plane perpendicular to the cuttingplane passing through the axis of the cone. Draw the line ahperpendicular to the H.T. Draw a perpendicular to XY froma till it meets the V.T. in a. Draw the projector hh, and joinha. ah is the H.T. of the Y. plane, and… … Fig. 166. 362 SOLID GEOMETRY chap^ Join these points towards the vertex C, till they meet the lineay in the points / and g. Draw projectors from / and g tillthey meet the line ah in / and g. fg is the plan, and fg theelevation of the major axis of the ellipse. Bisect/f/ in c, and draw a line…
Geometrical drawing
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