Question

${120}^{\circ }$ can be produced by extending the arc of

• A. ${90}^{\circ }$
• B. ${45}^{\circ }$
• C. ${60}^{\circ }$

Answer 1

The correct option is C ${60}^{\circ }$

Let us see ${60}^{\circ }$ first


Now ${120}^{\circ }$ can be produced by extending the arc of ${60}^{\circ }$


$\therefore {120}^{\circ }$ is obtained as below.