Assertion: parabola | /r/HasProperty | a one-parameter family
Facets:
Source sentences:
text: Of course it is correct: up to rigid motions, parabolas are a one-parameter family (take, say, the distance between the focus and directrix), and changing this parameter acts as a rescaling (I.e., similarity).
text: Parabolas are a one-parameter family, and the transformations "scale along one axis," "scale along the other axis", and similarity all have the same effect.