Question

Total sum of interior angles of a rectangular polygon with the sides a9 b12

Answer 1

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The sum of the interior angles of a polygon is obtained from the following equation.

`(n - 2) * 180°`

In which n is the number of sides of the polygon.

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Thus ;

a ) 9 sides

Just need to put 9 instead of n in the above equation .

`(9 - 2) * 180° =`

`7 * 180° =`

`1260°`

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b ) 12 sides

Just need to put 12 instead of n in the above equation .

`(12 - 2) * 180° =`

`10 * 180° =`

`1800°`

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