Question

How many right angles are there in ${540}^o$?

• A. $4$
• B. $6$
• C. $8$
• D. none of these

Answer 1

The correct option is B $6$

One right angle $={90}^{\circ }$

Let there be $x$ right angles in ${540}^{\circ }$

$\Rightarrow {90}^{\circ }x={540}^{\circ }\Rightarrow x=\frac{{540}^{\circ }}{{90}^{\circ }}=6$

So option $B$ is correct.