"tangent" meaning is a line or plane which touches a given curve or solid at a single point.
Therefore, by definition there is no tangent to a line.
if it were parallel it would not touch.
if it were coincident it would touch in all places.
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a tangent is a line that touches the circle at only ONE point
Line a is parallel to line b, m, and . Find .
A tangent line is a line that is parallel to and intersecting a point on a curve, where the limit of the distance between two points on that curve (one of them being the point in question) and those two points also being on that line approaches zero. Since a straight line has only one slope, at all points on the line, then there can only be one tangent line to a straight line, and the tangent line is the same line as the straight line.
Tangent line is a graph. This graph is to gather data.
A common tangent is a line which is tangent to two (or more) curves.