See section 12.11.1 for ellipses in space.
The ellipse command draws ellipses and other conic sections.
ellipse can take parameters in different forms.
ellipse returns and draws the conic section given by the
equation.
Input:
Output:
ellipse returns and draws the ellipse.
Input:
Output:
Input:
Output:
Note that if the third argument is a point on the real axis, the real affix of the point won’t work, it needs to be specified with the point command.