Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - Get Ready! - Page 1: 18

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.
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