Answer:
128.57 degrees
Explanation:
To find the measure of an interior angle of a regular polygon with
sides, we can use the formula:

To find the measure of an interior angle of a polygon with 7 sides, all we have to do is plug in 7 into the formula:

7 minus 2 equals 5, so the answer is
÷

180 times 5 is equal to 900, and 900 divided by 7 is approximately 128.57