Question

The sum of the angles of a pentagon is:

• A. ${360}^o$
• B. ${540}^o$
• C. ${180}^o$
• D. ${720}^o$

Answer 1

The correct option is B ${540}^o$

Sum of the angles of a polygon = $(2n-4){90}^o$
Sum of the angles of a rectangle = $(2\times 5-4){90}^o=6\times {90}^o={540}^o$