A text-book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained .. (1850)
Minifie, William, 1805-1880. [from old catalog] · Baltimore, W. Minifie & co. · leaf 46
Circle, 1st. Draw any chord, as A, B, and bisect it by a perpendicular E. D, which is a diameter of the circle.2nd. Bisect the perpendicular E. D by problem 1, the point of intersection is the centre of the circle. Figure 2. Another method of finding the Centre of a Circle, 1st. Join any three… … Fiq. f).