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Answer:
98°
Explanation:
The polygon shown contains 7 sides. Therefore:
Use the sum of interior angles formula to derive the sum of all of the angles:
(n-2)180 = sum
(7-2)180 =
5(180) = 900°
Subtract all of the angles shown from the total sum to derive the value of x:
900 - 146 - 122 - 142 - 140- 110 - 142 = 98°
m∠x = 98°.