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 16
PROBLEM 4. From a given point loithout a line, to draw a perpendicular to that Let AB be the given line, and 0 thegiven point. From C, draw any obliqueline, as On. Find the middle point ofOn by (problem 1), and from that point,as a center, describe a semicircle, havingOn as a diameter. From the… … 14 SURVEYING PROBLEM 5. At a given point in a line, to make an angle equal to another given angle. Let A be the given point in the line AB,and DCE the given angle. From C as a center, with any radius,CE, draw the arc ED. From A, as a center, with the radiusAF—CE, describe an indefinite arc; andfrom…
Surveying · Navigation
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