ray
In mathematics, a ray is a part of a line that starts at a particular point, called the endpoint, and extends infinitely in one direction
In mathematics, a ray is a part of a line that starts at a particular point, called the endpoint, and extends infinitely in one direction. It can be represented by a line segment with an arrowhead on one end, indicating the direction in which the ray continues indefinitely.
Rays are typically named using two points, with the endpoint being mentioned first. For example, if A is the endpoint and B is a point on the ray, it is written as ray AB or ray BA. The endpoint A is always included as part of the ray, but the point B and any other points that lie on the ray are not.
Rays are often used in geometry to denote directions or to describe angles. For example, in a triangle, a ray can be used to represent one of the sides of the triangle, starting from a vertex and extending outward. Rays can also be used to describe the path of light or other forms of energy traveling in a straight line.
It is important to note that a ray has no defined length and extends infinitely in one direction.
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