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
Pentas^on, five sides. Hexagon, six sides. Heptagon, seven sides Octagon, eight sides. … Fig. 15. sides are equal, tliej are regular jjyolygons / of which figs. 11-14 are ex-amples, annexed to which are their respective designations. A circle is a plane figure contained by one line,which is called the circumference^ and is such that allstraight lines, drawn from a certain point wdthin…