Creating a cone by specifying a line and a center point.
$$
$$ Declarations
$$
ENTITY/PT1,LN1,CN1
$$
$$ Geometry Definition
$$
PT1=POINT/0,0
LN1=LINE/2,0,1,1
$$
$$ Cone Definition
$$
CN1=CONE/CENTER,PT1,VECT,0,1,0,LN1
Cone Generated by Revolving a Line about an Imaginary Axis