Assertion: intersection curve | /r/HasProperty | no generatrix
Facets:
Source sentences:
text: If there is no generatrix parallel to the intersecting plane, the intersection curve will be an ellipse or a circle (or a point).
text: Otherwise, if there are two generatrices parallel to the intersecting plane, the intersection curve will be a hyperbola (or degenerate hyperbola, if the two generatrices are in the intersecting plane).