Identify the angles in the picture shown below and write their names in the table given below.

S.No.	Angle	Vertex	Sides or arms
$1.$	$\angle \mathrm{XYZ}$	$\mathrm{Y}$	$\mathrm{YX}, \mathrm{YZ}$
$2.$
$3.$
$4.$
$5.$
$6.$
$7.$
$8.$
$9.$
$10.$

 

In the given figure, $AB\parallel CD, \angle ABO=40°$ and $\angle CDO=35°$. Then the value of $x$ will be

The wheels of a car are of diameter $80 \mathrm{c}\mathrm{m}$ each. How many complete revolutions does each wheel make in 10 minutes when the car is traveling at a speed of $66 \mathrm{k}\mathrm{m}$ per hour? $\left(\mathrm{use} \pi =\frac{22}{7}\right)$

Only one circle can be drawn through three non collinear points.

Name the vertex and the arms of $\angle ABC$.

How many angles are formed in the figure given below? Name them.

In the given figure, write another name for $\angle 1$.

Investigate.
In the given figure, the angle measures $30°$. Look at the same figure through a magnifying glass.
Does the angle become larger? Does the size of the angle change?