Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 69
gle of 45° with it (fig. 95). Set off any distance B a, along D E, from B. Construct a perpendicu-lar to D E at a, and set off on this perpendicular a c equal to « B; drawthrough B (? a line, which will make with D E the required angle of 45°. Prob. XII.—To divide a givenangle^ asB AC (fig. 96),… … GEOMETEICAL PEOBLEMS. 49 tliaii half tlie arc l <?, describe two arcs intersecting each other, as at D;tlirough A and D draw a line which will bisect or divide iiito two equalparts the angle BAG. Peob. Xin.—To hisect the angle contained hetween two lines, as A B andCD (fig. 97), tvhe7i the…
