Question

Find the measure of an interior angle of a regular polygon of 9 sides.

Answer 1

Answer:

interior angle of a 9 sided polygon is 140 degree

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

General formula for finding the size of a regular polygon’s exterior angle is 360/n where n is the number of sides. A walk around the perimeter of the polygon would find the walker take one full turn, 360 degrees, and in a regular polygon this will be broken down in to n turns, one for each side walked down.

So for a 9 sided regular polygon, EA = 360/9 = 40 degrees

____________ii method_________

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem. Here is what it means: Perimeter = the sum of the lengths of all the sides. Apothem = a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.

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