A treatise on surveying and navigation: uniting the theoretical, practical, and educational features of these subjects (1857)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst; Toledo, Anderson, Burr, & co. · leaf 15
radiusgreater than the half of AB (Post. 3), de-scribe arcs, cutting each other in n and m.Join n and m; and C, where it cuts ABfwill be the middle of the line required. Proof, (th. 15, b, 1, cor. 1 ). A- V*—.B PROBLEM 2. To bisect a given angle. Let ABO be the given angle. With anyradius, from the… … INTRODUCTION. 13 PROBLEM 3. From a given point, in a given line, to draw a perpendicular to thatline. Let AB be the given line, and Cthe given point. Take n and m equaldistances on opposite sides of 0; andfrom the points m and n, as centers,with any radius greater than nC orormO, describe arcs…
Surveying · Navigation
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