Assertion: ellipse's diameter | /r/HasProperty | a line segment
Facets:
Source sentences:
text: In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the widest points of the perimeter.
text: Diameter: a line segment whose endpoints lie on the circle and which passes through the centre; or the length of such a line segment, which is the largest distance between any two points on the circle.
text: Diameter: a line segment whose endpoints lie on the circle and that passes through the centre; or the length of such a line segment.