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s344n2d4d5 [400]
3 years ago
12

Each interior angle of the regular n-gon has a measure of 140

Mathematics
1 answer:
xeze [42]3 years ago
6 0
Sum of internal angles of any polygon is: (n-2)x180
So measure of an interior edge is ( ( n - 2 ) x 180 ) / n = 140
So 140n = 180n - 360
40n = 360
n = 9
So it's a nonagon.

Hope this helps :)
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