The sum of the interior angles of an octagon is:

The sum of the interior angles of an octagon is:
  1. $900^{\circ}$
  2. $1080^{\circ}$
  3. $1260^{\circ}$
  4. $1440^{\circ}$

Solution

Sum $= (8-2) \times 180^{\circ} = 6 \times 180^{\circ} = 1080^{\circ}$.

Asked in: IMO

Practice more UNDERSTANDING QUADRILATERALS questions on Aicharya