hasDirectrix

6 triples
GPTKB property

Random triples
Subject Object
gptkb:Hyperbola Yes
gptkb:hyperbola yes
gptkb:Parabola line outside the curve
gptkb:Conic_section Yes
gptkb:Conics Yes
gptkb:Parabolas y = k - 1/(4a) for y = a(x-h)^2 + k