In another branch of mathematics called coordinate geometry, the points that define a ray are located on the plane using their coordinates - two numbers that show where the point is positioned. For more on this, see Ray definition Coordinate Geometry. Home Contact About Subject Index. Definition: A portion of a line which starts at a point and goes off in a particular direction to infinity. Try this Adjust the ray below by dragging an orange dot and see how the ray AB behaves.
A line segment has two endpoints. It contains these endpoints and all the points of the line between them. You can measure the length of a segment, but not of a line. A ray is a part of a line that has one endpoint and goes on infinitely in only one direction.
You cannot measure the length of a ray. As seen below, points , , and are on the same line. Therefore, Plane is not a valid name for the plane.
True or false: can also be called. A line segment has two letters in its name, each of which is an endpoint.
A segment is named with only two letters, each of which is an endpoint. True or false: and refer to the same line segment. The two letters in the name of a line segment are its endpoints in either order. Therefore, is the segment with endpoints and ; consequently, it can also be called. True or false: and refer to the same ray. A ray is named with two letters, the first of which is an endpoint and the second of which is any other point the ray passes through.
The ray also passes through Point , so the ray can also be called. If you've found an issue with this question, please let us know. With the help of the community we can continue to improve our educational resources. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.
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Louis, MO We are open Saturday and Sunday! Subject optional. Email address: Your name:. Possible Answers: and. Correct answer: and. Explanation : The sides of an angle are two rays, both of which begin at a common vertex. Report an Error. Possible Answers: A ray can cross itself. One side of the ray goes on forever while the other stops.
A line can be curved but a ray is always straight. Correct answer: One side of the ray goes on forever while the other stops. Explanation : A ray is defined by two points, one that defines the beginning, and the other that defines the direction - this ray goes on forever in whatever direction is defined by that second point.
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