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konstantin123 [22]
2 years ago
6

Will give you (Brainliest)

Mathematics
2 answers:
Kobotan [32]2 years ago
6 0
<h3>Answer:</h3>

7

<h3>Explanation:</h3>

The formula usually used for the sum of interior angles of an n-sided convex polygon is ...

... angle sum = 180°×(n -2)

In your case, angle sum is 900°, so this becomes

... 900 = 180(n -2)

... 5 = n -2 . . . . . . . . . divide by 180

... 7 = n . . . . . . . . . . . the polygon has 7 sides

_____

It may be easy to remember that the sum of exterior angles is always 360°, and each exterior angle adds to its corresponding interior angle to make 180°. Then, for n angles The sum of interior and exterior angles is n·180°. Subtracting the sum of exterior angles from this gives the sum of interior angles: n·180° -360° = 180°(n-2).

den301095 [7]2 years ago
5 0
The only answer i know is the 1st one... sorry. and it is 7
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A.
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b.
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