Assertion: geometry's point | /r/HasProperty | rational
Facets:
Source sentences:
text: As Q is a polynomial of degree two, a line passing through A crosses the hypersurface at a single other point, which is rational if and only if the line is rational (that is, if the line is defined by rational parameters).
text: A point of the projective hypersurface defined by Q is rational if and only if it may be obtained from rational values of t 1 , … , t n − 1 . {