#### Answer

origin;
x-axis

#### Work Step by Step

RECALL:
An angle in standard position has its vertex at the origin and its initial side along the positive x-axis.
Thus, the missing expressions in the given statement are (in order):
origin;
x-axis

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

origin;
x-axis

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