A text book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained (1849)
—-^■■- lin- , I lyiin /■/V/. A I./ ■ / I 11 !• \ \K^ \ … i. N I i; I. I. .\ //AA PLATE XIX. 45 5th. The axis of a cone, is a line passing from the vertex to thecentre of the base, as M. JV^ figs. 1, 2, 3 and 4, and representsthe hne about which the triangle is supposed to rotate. 6th. A RIGHT CONE. When the axis of a cone is perpendicularto its base, it…