Assertion: ellipse | /r/HasProperty | formed
Facets:
value: by cutting through a cone
type: MANNER
Source sentences:
text: An ellipse is formed by cutting through a cone at an angle.
text: An ellipse can be formed by slicing a right circular
text: An ellipse can be formed by slicing a right circular cone with a plane traveling at an angle to the base of the cone.
text: An ellipse is formed by cutting a three dimensional cone with a slanted plane.