# What does ray mean?

A ray is a **line that starts at a given point and goes off for ever in some direction**. It may pass through another point as it does so. This is the same as the definition of a Ray in ordinary plane geometry, the only difference being that we know the coordinates of the points involved.

What does Ray mean in math terms? A ray is a **line that starts at a given point and goes off for ever in some direction**. It may pass through another point as it does so. This is the same as the definition of a Ray in ordinary plane geometry, the only difference being that we know the coordinates of the points involved.

What is the meaning of ray? Definition of ray. (Entry 1 of 6) : **any of an order (Rajiformes) of usually marine cartilaginous fishes** (such as stingrays and skates) having the body flattened dorsoventrally, the eyes on the upper surface, and enlarged pectoral fins fused with the head.

What is the meaning of the Rays? (rā), 1. A beam of light, heat, or other form of radiation. The **rays** from radium and other radioactive substances are produced by a spontaneous disintegration of the atom; they are electrically charged particles or electromagnetic waves of extremely short wavelength.

What does medullary ray mean? medullary ray. a **band of PARENCHYMA cells** in plant roots and stems leading out from the centre along a radius and separating the vascular tissues, forming xylem rays and phloem rays in primary and secondary growth.

## What is a difference between a ray and line in math?

What is a difference between a ray and line in math? Geometry is one of the basic subjects in math and the tenets of this subject are the concepts of lines and rays. Lines and line segments are the same things and the main difference between them and **rays**, is that the latters originate from a specific place where as the lines are mostly used as connective agents between two things or points.

What is an example of a ray in math? In geometry, a ray is a line with a single endpoint (or point of origin) that extends infinitely in one direction. An example of a ray is a **sun ray** in space; the sun is the endpoint, and the ray of light continues on indefinitely.

Which is the endpoint of a ray? **Point A** is the ray’s endpoint. One way to think of a ray is a line with one end. A ray starts at a given point and goes off in a certain direction forever, to infinity. The point where the ray starts is called (confusingly) the endpoint. On its way to infinity it may pass through one or more other points.

How to write a ray? There is a shorthand way of **writing** this: This is read as “**ray** AB”. The arrow over the two letters indicates it is a **ray**, and the arrow direction indicates that A is the point where the **ray** starts. By a single letter. The **ray** above would be called simply “q”.