Seudónimo
Seudónimo
08-08-2018
Mathematics
contestada
Geometry math question please help
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kamraaa
kamraaa
08-08-2018
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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