67 TRUNCATED CONE. PROBLEM XIY. TO DRAW A TRUNCATED CIRCULAR CONE, GIVEN IN POSITION AND MAGNITUDE, THE TRUNCATIONS BEING IN HORIZONTAL PLANES, AND THE AXIS OF THE CONE VERTICAL. Let a b c d, Fig. 37., be the portion of the cone required. … Fig. 37. As it is given in magnitude, its diameters must be given at the base and summit, A b and c d ; and its vertical height, ce.* * Or if the length of its side, a c, is given instead, take a e, Fig. 37., equal to half the excess of a b over cd ; from the point e raise the perpendicular ce.…
Perspective
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