3 years ago

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

How many sides does this regular polygon have? Pls help