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 412
meeting rffi produced in F. Draw a linefrom F parallel to eE till it meets de produced in /. Draw a linefrom h through /. This is the plan of the axis, indefinite inlength. Draw a projector from / till it meets de produced in /. TANGENT PLANES AND SOLIDS 391 Draw a line from h tlirough /. This is… … Fig. 189. Find the true length of ab as follows:—Draw «A perpen-dicular to ah, and equal in length to the height of a above XY.Join Ah. Construct on each side of hY an angle equal to half thegiven vertex angle, and make the lines forming the angles eachequal in length to Ab, which give the points g…
Geometrical drawing
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