Question

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Answer 1

Answer:

The sum of interior angle of polygon (nonagon) is 1260°

here the formula to find interior angle of polygon is applied to find the sum of interior angle of any polygon :- (n-2)×180.

given, n=no.of sides

sides:- 9

=(9-2)×180

=7×180

=1260°

proof in triangle it is 180.

=(3-2)×180

=1×180

=180

if a particular angle is to be find then divide by n

(n-2)×180/n.

Answer 2

Answer:

May be the answer of this question is nonagon and the sum of its interior angle is 1260 degree.

Hope it's helpful to you.

According to my point of view this is the correct answer.