Let us make this polygon revolve round the axis AOB, of the cap every part of the right line mn, up will form a truncated cone, of which AOB will be the axis. The whole surface of these truncated cones will difier less from the surface of theanbsp;...
|Title||:||Mathematics practically applied to the useful and fine arts by Baron C. D., adapted to the state of the arts in England by G. Birkbeck. Geometry of the arts|
|Author||:||François Pierre Charles Baron DUPIN, George BIRKBECK|