Returns the ratio of the minor radius to the major radius for the elliptical figure (ellipse or arc). The radius ratio is in the range [1e-6 to 1.0].

Example of Working with the Ellipse Object 

Example of Working with the Elliptical Arc 

Specific Ellipse Properties 

OdDbEllipse::minorAxis() method 

OdDbEllipse::majorAxis() method 

OdDbEllipse::setRadiusRatio() method