Each interior angle of a regular polygon is 140 degree. the number of sides of the polygon is?
To find the number of sides of a regular polygon given the measure of one of its interior angles, you can use the formula:
n = 360 / (180 - x)
where n represents the number of sides and x represents the measure of one interior angle.
In this case, the interior angle is given as 140 degrees, so the formula becomes:
n = 360 / (180 - 140)
n = 360 / 40
n = 9
Therefore, the polygon has 9 sides.