Question

Sum of the interior angles of a polygon is , where 'n' is the number of sides.

• A. $(n-2)\times {180}^{\circ }$
• B. $n\times {180}^{\circ }$
• C. $2n\times {180}^{\circ }$

Answer 1

The correct option is A $(n-2)\times {180}^{\circ }$

We know that if a polygon has n sides, then the sum of interior angles of the polygon is $(n-2)\times {180}^{\circ }$.

For example, pentagon has 5 sides and sum of its interior angles is $(5-2)\times {180}^{\circ }=3\times {180}^{\circ }={540}^{\circ }$