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3 votes
Geometry math question please help

Geometry math question please help-example-1
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User Frakkle
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1 Answer

3 votes
First, work out the interior of a regular 21-gon.
180°(n-2) = 180°(21-2)
= 180°(19)
= 3420°
3420°/21 = 162.9°
Therefore the answer is A.
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User HoppyKamper
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8.3k points

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