Arms and Vertex of an Angle

Look at the below figure and name the angle marked by digit $12$ by using three letters.

If the required answer is of the form $\angle \mathrm{CO}\square$, then what letter should come in place of $\square$?

Look at the below figure and name the angle marked by digit $10$ by using three letters :

Write down the correct answer (without the $\angle$ symbol) from the following:: $\mathrm{COD}/\mathrm{BOA}/\mathrm{OAB}/\mathrm{ABO}$.

Look at the below figure and name the angle marked by digit $6$ by using three letters :

Write the correct answer from the following (without the $\angle$ sign): $\mathrm{BOC}/\mathrm{OBC}/\mathrm{BCD}/\mathrm{BCO}$.

Look at the below figure and name the angle marked by digit $5$ by using three letters. If the required angle is $\angle \mathrm{O}xy$ then $xy$ is _____.

Look at the below figure and name the angle marked by digit $4$ by using three letters :

Write the correct answer from the following (without the $\angle$ sign): $\mathrm{ABO}/\mathrm{COD}/\mathrm{CDO}/\mathrm{AOD}$.

Look at the below figure and name the angle marked by digit $3$ (without the $\angle$ symbol) by using three letters.$\left(\mathrm{COB}/\mathrm{BOA}/\mathrm{OAB}/\mathrm{ADO}\right)$

Look at the below figure and name the angle marked by digit $2$ by using three letters:

Write down the correct answer (without the $\angle$ symbol) from the following: $\mathrm{COB}/\mathrm{BOA}/\mathrm{OAB}/\mathrm{ABO}$.

Look at the following figure and name the angle marked by digit $8$ by using three letters :

Look at the following figure and name the angle marked by digit $7$ by using three letters :

Write the correct answer from: $\mathrm{POW}/\mathrm{ROQ}/\mathrm{UOV}/\mathrm{SOT}$ (without the $\angle$ sign).

Look at the below figure and name the angle marked by digit $6$ (without the $\angle$ symbol) by using three letters.$\left(\mathrm{ROS}/\mathrm{SOT}/\mathrm{TOU}/\mathrm{POQ}\right)$

In the above figure, which digit represents $\angle SOT$?

In the above figure, which digit represents $\angle ROS$?

In the above figure, which digit represents $\angle ROQ$?

Look at the following figure and name the angle marked by digit $2$ by using three letters.

If the required answer is of the form $\angle \mathrm{WO}\square$, then what letter should come in place of $\square$?

Look at the following figures and name as many line segments as you can:

Look at the following figures and name as many line segments as you can: