Assertion: regular polygon's line | /r/HasProperty | the line perpendicular
Facets:
value: in two dimensions
type: OTHER
value: at the point
type: LOCATION
value: to the curve
type: OTHER
value: to the tangent line
type: LOCATION
Source sentences:
text: For example, in two dimensions, the normal line to a curve at a given point is the line perpendicular to the tangent line to the curve at the point.