Assertion: ellipse's axis | /r/HasAspect | focus
Facets:
value: at (h,k+p)
type: OTHER
Source sentences:
text: A vertical axis has a focus at (h,k+p) and the equation (x-h)2=4p(y-k).
text: A horizontal axis has a focus at (h+p,k) and the equation (y-k)2=4p(x-h).