#### Answer

20 degrees

#### Work Step by Step

We know that there are 180 degrees per pi radians. Thus, we find:
$$=\frac{\pi}{9} \ radians \times \frac{180^{\circ}}{\pi\ radians}=20^{\circ}$$

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Published by
McDougal Littell

ISBN 10:
0618595414

ISBN 13:
978-0-61859-541-9

20 degrees

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