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Question

One angle of a six-sided polygon is 140 and the other angles are equal. Find the measure of each equal angle.

A
116
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B
126
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C
112
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D
118
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Solution

The correct option is A 116
One angle of a six-sided polygon is 140o and the other angles are equal.
n = 6
Sum of interior angles of a polygon of 6 sides =180(n2)=180(62)=720
=> 140o+5×x=720o
=> 5×x=580o
=> x=116o
Each equal angle is 116o.

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