Question

Draw $\angle ABC$ of measure ${120}^{\circ }$ and bisect it.

Answer 1

1. Draw a ray $BC$. Using a protractor, draw an angle of ${120}^{\circ }$ from end $B$ to ray $BC$. Mark any point on the ray as $A$.

2. Draw two equidistant arcs on ray $BC$ and ray $BA$ respectively.

3. From the two points on ray $BC$ and $BA$, draw two intersecting arcs and mark it as $M$. Join $B-M$.

Ray $BM$ is the required angle bisector.