Assertion: ellipse's axis | /r/HasProperty | the line segment
Facets:
Source sentences:
text: A semimajor axis is one half the major axis: the line segment from the center, through a focus, and to the edge of the ellipse.
text: The semi-minor axis (more properly, minor semi-axis) of an ellipse or hyperbola is a line segment that is at right angles with the semi-major axis and has one end at the center of the conic section.
text: major axis is the line segment passing the foci and intersects with the ellipse.