What Does A Ray Look Like In Math

What are rays and lines.

A ray is a part of a line that begins at a particular point called the endpoint and extends endlessly in one direction. A ray can be thought of as being a snippet or segment of a line. What are rays and lines. They start at the sun and go on indefinitely.

Illustrated definition of ray. It has zero width. And so the mathematical purest geometric sense of a line is this straight thing that goes on forever. So that s its starting point but then it just keeps on going on forever.

One will be an endpoint the start of the ray. But a line does not have definite length. A ray has no measurable length because it goes on forever in one direction. Write two key differences between a line and a ray.

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A ray looks like this. So the ray might start over here but then it just keeps on going. A line goes without end in both directions but a ray has one endpoint and goes without end in one direction. In plane geometry a ray is easily constructed with two points.

In geometry however a ray has no width. A part of a line with a start point but no end point it goes to infinity try moving. A line segment has a definite length. A ray is named with its endpoint in the first place followed by the direction in which its moving.

A ray is named based on the direction in which it extends. In math terms a ray is a line with one endpoint never ending a line. A ray starts out at a point and continues off to infinity. A ray looks like this.

If you draw a ray with a pencil examination with a microscope would show that the pencil mark has a measurable width. The line ab is same as the line ba. This is ray qp or ray note the one arrowhead. Think of the sun s rays.

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The pencil line is just a way to illustrate the idea on paper. The other point is merely a signpost a way to give the ray a name. But the ray ab is different than the ray ba. We can show that by drawing an arrow at one end of the ray.

A ray has a well defined starting point. A ray is one dimensional. One end point and an endless line going the other way. We can name a ray using its starting point and one other point that is on the ray.

One end point and an endless line going the other way. So that right over there is a ray. How do we name a ray.