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
ame ra-dius describe c 5/ with the dividers mea-sure the length of the arc C B, and on <? 5lay off this distance; through c draw c a^and we have the required angle or open-ing cah^ equal to the given angle CAB. Prob.X.—From a point A of a givenline D E, to draw a line making an angleof 60° with… … Fig. 93. the line A, C.angle of 60°. This line will make with the given one the required ^c;
