Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter P - Preliminary Concepts - P.1 - Sets and Geometry - Exercises P.1 - Page 6: 7

Answer

a) TRUE b) FALSE

Work Step by Step

a) Since you cannot to get from A to C on the line without going through B, B is between points A and C. b) While segment BA would be a ray with endpoint A, segment AB is oriented in the wrong direction and is thus not a ray since it moves away from the line going to infinity.
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