Assertion: ellipse | /r/HasProperty | tangent
Facets:
value: always
type: DEGREE
value: at $g$
type: OTHER
value: to the -axis
type: LOCATION
Source sentences:
text: An ellipse has foci at and in the -plane and is tangent to the -axis.
text: There's always a unique ellipse which is tangent at $F$ and which passes through $G$, $H$, and $J$; and from experimentation, it looks like this ellipse is always tangent at $G$, $H$ and $J$ as well.