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 523
, at h 25° with he, and at c 45° withch. Draw the axes of the cones cca\ hh, and ce any convenient 502 SOLID GEOMETRY height, but all equal. Assume any points d, e on aa, andset off on the other two axes corresponding points at the sameheight above h and c. Draw lines from all these points… … Where the lines from a, c, cV on the axis act meet the genera-trix of a in the points A, E, D draw lines parallel to the axistill they meet ac produced in A, E, D. With a as centre, andA, E, D as radii, draw arcs. These are the contours on plan ofthe inverted cone whose vertex is a. Eind the…
Geometrical drawing
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