Answer
$central$ $angle$ $=90°$
Work Step by Step
One-fourth of a circle is 90° (since the whole circle measures 360°).
We know that the central angle measures the same value as the intercepted arc.
So, we have:
$central$ $angle$ $=90°$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 12 - Section 12.5 - Circles - Exercise - Page 410: 15
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