Question

How many straight angles can make two complete revolution of circle?

• A. $2$
• B. $4$
• C. $3$
• D. $5$

Answer 1

The correct option is B $4$

A straight angle has a measure of ${180}^{\circ }$.


Two straight angles will contribute to one complete revolution around a circle i.e ${360}^{\circ }.$


So, two complete revolution means ${720}^{\circ }$ which require $\frac{{720}^{\circ }}{{180}^{\circ }}=4$ revolutions.