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 91
F T beyond the curve to c, and bisect the exterior angle c T F by the lineT d. Tliis line T c? is the tangent required. Piion. LX.—To draw a tangent to an ellipse from a given point lolth-oat the curre (iig. 162). Ki-oiii \hv given point T as centre, with a radius equal to its distancefi-oni \]\o,…
