9. In a 8-sided polygon, two angles are of
measure 120°, other two angles are of 150° and the remaining four angles are equal . Find the measure of four remaining angles .
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Answer:
Sum of all the interior Angles = 1080°
Total Measure of two angles = 240 °
Total Measure of other two angles = 300°
Total sum = 540°
So , let each angle be x °
4x + 540° = 1080°
4x = 540°
x = 135°
Therefore , the measure of four Angles are 135° each.
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