Question

Sum of all internal angles of a 7 sided polygon =

• A. 900${}^{\circ }$
• B. 1080${}^{\circ }$
• C. 1260${}^{\circ }$

Answer 1

The correct option is A 900${}^{\circ }$

Sum of angles of a $n$ sided polygon = (n-2)$\times {180}^{\circ }$

Here n =7;
therefore sum of angles = (7-2)$\times {180}^{\circ }$ = 5$\times {180}^{\circ }$
= 900${}^{\circ }$