Assertion: ellipse's ax | /r/HasProperty | perpendicular
Facets:
value: at the center
type: LOCATION
value: to each other
type: OTHER
Source sentences:
text: The axes are perpendicular at the center.
text: Ellipses are symmetric about exactly two axes that are perpendicular to each other.
text: The axes are perpendicular at the center.
text: The axes are perpendicular at the center.
text: The principal axes of an ellipsoid or hyperboloid are perpendicular
text: The principal axis theorem states that the principal axes are perpendicular, and gives a constructive procedure for finding them.