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 410
^ and %Join kl and hi. Produce ae and old till they meet these linesin I and V. Then at and a!l are the projections of the line ofcontact between the cone and the given plane. They represent TANGENT PLANES AND SOLIDS 389 the intersectiou with the given plane of a plane perpendicularto it,… … Fig. 188. vertical height of V above V. Join &L, which is the radiusrequired. Next assume ab to be a ground line. Draw aA. and &B per-pendicular to it, and equal in length to the heights of a and habove XY. Join AB. Draw a line through B perpendicular toAB, and make BP and BQ each equal to…
Geometrical drawing
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