It is a tangent line
The term you're looking for is "tangent." In geometry, a tangent is a straight line that touches a curve at a single point, known as the point of tangency, and continues on without crossing the curve at that point. Tangents are often discussed in relation to circles and other curves, where they represent the instantaneous direction of the curve at the point of contact.
Tangent
tangent
A line is a figure that has no endpoints. It extends infinitely in both directions, characterized by having length but no width or thickness. In geometry, a line is often represented by a straight path that continues indefinitely, distinguishing it from line segments, which do have defined endpoints.
geometry means
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A collection of points that extends endlessly in both directions along a straight line is called a "line" in geometry. It is defined by an infinite set of points that are arranged in a straight path, with no endpoints. Mathematically, it can be represented using a linear equation or by specifying two points through which it passes. Lines are fundamental concepts in geometry and are characterized by their length without width.
A semi-circle is a noun. It refers to a two-dimensional shape that represents half of a circle. In geometry, it is defined by a curved edge and a straight diameter. It does not function as a verb.
A circle is typically considered to have zero sides, as it is a continuous curve with no straight edges or vertices. In geometry, sides are defined as the straight line segments that form the boundaries of polygons, and since a circle does not fit this definition, it is classified as having no sides.
It is a very basic concept which cannot be defined. Undefined terms are used to define other concepts. In Euclidean geometry, for example, point, line and plane are not defined.
A straight line is often referred to simply as a "line" in geometry. It is defined as the shortest distance between two points and extends infinitely in both directions without any curvature. Mathematically, it can be represented using a linear equation in a coordinate system.
A point can be defined as a mathematically precise location.