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mars1129 [50]
3 years ago
15

A.) 18 B.) 20 C.) 24 D.) 25

Mathematics
1 answer:
Arlecino [84]3 years ago
3 0

D,  s=180- n-2

and s=165n

165n=180-n-2

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see attachments

Step-by-step explanation:

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Step-by-step explanation:

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