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Please help will mark right answer brianlyist

Please help will mark right answer brianlyist-example-1

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Answer:

b = 64°

2b = 128°

Explanation:

use (n-2)×180 to find the total number of degrees inside a polygon where 'n' equals number of sides

hexagon has 6 sides; (6-2)×180 = 720°

528 + 3b = 720

3b = 192

b = 64

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