Assertion: ellipse's foci | /r/HasProperty | the locus of points
Facets:
value: for two given points
type: OTHER
Source sentences:
text: An ellipse is defined as follows: For two given points, the foci, an ellipse is the locus of points such that the sum of the distance to each focus is constant.
text: For two given points, the foci, an ellipse is the locus of points such that the sum of the distance to each focus is constant.