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
\f^ ii2Mi(dhlogra7n ; if its angles I OEOMETEICAL DEFINITIONS AND TECHNICALITIES. are riglit angles, it is a rectangle (fig. 7); if the sides are also equal, it is asquare (fig. 8); if all the sides are equal, hut the angles not right angles,it is a rhoinhus (fig. 9). A trajpezium has only two of… … Pentas^on, five sides. Hexagon, six sides. Heptagon, seven sides Octagon, eight sides.
