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3 years ago

Help please !! need it asap

Mathematics

1 answer:

andrezito [222]3 years ago

5 0

Answer:

x = 61

Step-by-step explanation:

Formula:

(N {which is the number of sides in the polygon] - 2) * 180 = the sum of all the angles in the polygon.

Simply add the known angles together, subtract that from the above equation and you get the value of x.

(5 {which is N] - 2) * 180

3 * 180 = 540

82 + 121 + 129 + 147 = 479

540 - 479 = x

540 - 479 - 61

x = 61

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