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Lubov Fominskaja [6]
3 years ago
8

Does anyone know this?

Mathematics
1 answer:
Bond [772]3 years ago
8 0

Step-by-step explanation:

measure \: of \: interior \: angle \\  =  \frac{ (18 - 2) \times 180 \degree}{18}  \\  = 16 \times 10 \degree \\  = 160 \degree \\  \\ measure \: of \: exterior \: angle \\  =  \frac{360 \degree}{18}  = 20 \degree \\  \\  \\

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