Ray
In mathematics, a ray is a line with a starting point (origin) and extending infinitely in one direction
In mathematics, a ray is a line with a starting point (origin) and extending infinitely in one direction. It is named after the endpoint or origin from which it originates.
The point of origin is called the endpoint or vertex of the ray, and the direction in which it extends is called the ray’s direction. A ray is denoted by drawing an arrowhead on one end of the line segment, indicating the direction in which the ray extends.
It is important to note that a ray has no end point in the opposite direction it extends. This means that a ray only has one endpoint (starting point) but extends infinitely in the other direction. Conversely, a line segment has two endpoints and has a finite length.
For example, if we have a ray starting at point A and extending in the positive x-direction, we would write it as “ray AB” or simply “ray A”. The arrowhead would be placed on point B to indicate that it extends infinitely in that direction.
Rays are commonly used in geometry and trigonometry when discussing angles and their measures. The endpoint of a ray is often used to define the vertex of an angle, and the ray itself represents one of the sides of the angle.
Overall, rays are fundamental components of geometry that help us understand and analyze the direction and position of objects in space.
More Answers:
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Understanding Opposite Rays | Describing Angles & Relationships in Geometry