#### Answer

A ray starts at a point and extends infinitely in a direction.

#### Work Step by Step

That is the definition of a ray in geometry. Like the sun's light extends infinitely in one direction, a ray extends infinitely in one direction.

Published by
Prentice Hall

ISBN 10:
0133281159

ISBN 13:
978-0-13328-115-6

A ray starts at a point and extends infinitely in a direction.

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