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Which one of the following formulas will find the sum of interior angles of a polygon with n sides 180n-2 180n-360 180(n-1) 180n
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5 votes
Which one of the following formulas will find the sum of interior angles of a polygon with n sides

180n-2
180n-360
180(n-1)
180n

User Asif
by
6.7k points

2 Answers

4 votes

Answer:

A. 180n - 2

Not 180n-360

Not 180(n-1)

Not 180n

User Claudio Delgado
by
6.0k points
3 votes
Each time we add a side (triangle to quadrilateral, quadrilateral to pentagon, etc), we add another 180° to the total of the interior angle.
Triangle, sum interior angle is 180
Square, is 360
Pentagon is 540
So the formula is 180 ( n – 2 )
User BTakacs
by
6.0k points
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