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प्रश्न
One angle of a six-sided polygon is 140o and the other angles are equal.
Find the measure of each equal angle.
उत्तर
Let the measure of each equal angles are x.
Then we can write
140° + 5x = ( 2 x 6 - 4 ) x 90°
140° + 5x = 720°
5x = 580°
x = 116°
Therefore the measure of each equal angles are 116°
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