3 years ago

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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