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bagirrra123 [75]
3 years ago
11

How many sides does this regular polygon have? Pls help ​

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0

Answer:

9 sides

Step-by-step explanation:

7y + 2y = 180

9y = 180

y =20

so, 2y, the exterior angle is 2 x 20 = 40

Divide 360 by 40 = 9

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