A tangent, but it (a) has nothing to do with croosing (whatever that may mean); and (b) while it does not cross the curve in the neighbourhood of the point of contact - there is no restriction on it crossing the curve at a distance.
In geometry a straight line that touches a curve is called a tangent.
tangent
A tangent is a straight line that touches the circumference of a circle at a given point
Tangent
tangent
It is a tangent line
A tangent line touches a curve or the circumference of a circle at just one point.
In geometry a straight line that touches a curve is called a tangent.
tangent
A tangent line.
A tangent is a straight line that touches the circumference of a circle at a given point
Tangent
tangent
if it touches at three points it is a straight line. Since it is also an asymptote, it will be a straight horizontal line (zero slope)
It is a tangent
It is the tangent of the circle
Tangent