It is a straight line that touches the curve such that the line is perpendicular to the radius of the curve at the point of contact.
A tangent at that point where a straight line just touches a curve and a secant line when the straight line bisects the curve.
tangent
A tangent
A tangent. And it does not need to be a circle - it can be any curve.
A tangent line.
It is a straight line that touches the curve such that the line is perpendicular to the radius of the curve at the point of contact.
A tangent at that point where a straight line just touches a curve and a secant line when the straight line bisects the curve.
tangent
Tangent:In geometry, the tangent line (or simply the tangent) is a curve at a given point and is the straight line that "just touches" the curve at that point. As it passes through the point where the tangent line and the curve meet the tangent line is "going in the same direction" as the curve, and in this sense it is the best straight-line approximation to the curve at that point.Chord:A chord of a curve is a geometric line segment whose endpoints both lie on the outside of the circle.
A tangent line touches a curve or the circumference of a circle at just one point.
A tangent
A straight line that intersects a circle or curve at two points, but which has both end points outside the circle or curve is called a secant. A straight line that links two points on a circle or curve is called a chord. A straight line which touches a circle or curve at one point is called a tangent. A straight line that cuts a circle or curve at one point is a straight line.* For moving diagrams see Related links below this box.
It is a tangent line
A tangent. And it does not need to be a circle - it can be any curve.
Tangent
The answer depends on the context. In the context of a curve, a tangent is a straight line that touches the line without intersecting it. The antonym does not have a specific name because it could be a straight line that does not meet the curve at all, or it could be one that crosses the curve. Note that even a tangent can cross the curve at some other [distant] point(s).