Draw an angle of $110^{\circ}$ with the help of a protractor and bisect it. Measure each angle.

(N/A) Given: An angle $\angle ABC = 110^{\circ}$.
Required: To draw the bisector of $\angle ABC$.
Steps of construction:
$1.$ With $B$ as centre and a convenient radius,draw an arc to intersect the rays $BA$ and $BC$ at $P$ and $Q$ respectively.
$2.$ With centre $P$ and a radius greater than half of $PQ$,draw an arc.
$3.$ With centre $Q$ and the same radius (as in step $2$),draw another arc to cut the previous arc at $R$.
$4.$ Draw ray $BR$. This ray $BR$ is the required bisector of $\angle ABC$.
Measurement: Each bisected angle,$\angle ABR$ and $\angle RBC$,will be $110^{\circ} / 2 = 55^{\circ}$.