The sum of the exterior of an n-sided convex polygon is half the sum of its interior angle. find n
Answer Details
An exterior angle of a polygon is the angle between any side of the polygon and its adjacent extended side. The sum of the exterior angles of any polygon, regardless of the number of sides, is always equal to 360 degrees.
The sum of the interior angles of a polygon can be found using the formula (n-2) x 180, where n is the number of sides of the polygon. So if we have an n-sided polygon, the sum of its interior angles is (n-2) x 180.
According to the problem, the sum of the exterior angles is half the sum of the interior angles. Mathematically, we can express this as:
Sum of exterior angles = 1/2 x sum of interior angles
Substituting the formulas we have for the sum of exterior and interior angles, we get:
360 = 1/2 x (n-2) x 180
Simplifying, we get:
2 x 360 = (n-2) x 180
720 = (n-2) x 180
Dividing both sides by 180, we get:
4 = n-2
n = 6
Therefore, the number of sides of the polygon is 6.