Question

Find the sum of interior angles of a pentagon.

Answer 1

We know that the sum of the interior angles of a polygon of $n$ sides $=(n-2)\times 180°$.

Since a pentagon has five sides.

So, the sum of the interior angles of a pentagon is $=(5-2)\times 180°=3\times 180°=540°(wheren=5)$.

Hence, the sum of interior angles of a pentagon is $540°$.