Exercise

In the below figure, name the points which are in the exterior of $\angle \mathrm{PQR}$.

In this figure, write the another name for $\angle 2$.

In this figure, write the another name for $\angle 3$.

Point $C$ is the interior of $\angle AOC$.

Point $C$ is the interior of $\angle AOD$

Point $D$ is in the interior of $\angle AOC$.

Point $B$ is the exterior of $\angle AOD$.

Point $C$ lies on $\angle AOB$.