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 24
t or one-fourth of a circle. Half a circle is called a semicircle, A cliord is a straight line joining theextremities of an arc, as a h. The spacecut ofii: by the chord is termed a segment. A tangent to a circle or other curveis a straight line which touches it at onlyone point, as c d touching the… … geo:metkical definitions and technicalities.
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