Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 19
arc, termi-nated by an arrow-head (Fig. 3). In drawing intersecting arcs for bisecting lines, etc., the arcsshould not intersect each other too obtusely or too acutely : thenearer the angle between the arcs approaches 90° the easier itwill be to ascertain the exact point required. PRACTICAL TLANE… … All the problems should be drawn larger than shown. Great accuracy is required in drawing the various problems.Every effort should be made to ensure neatness and precisionin the work. All arcs should be inked in first, as it is easier to join a hne toan arc than an arc to a line. CHAPTER…
Geometrical drawing · Design · Drawing
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