Write the difference between a line, a ray and a line segment.

Count and write the number of quadrilaterals seen in the following diagram:

$O$ is the common centre of the two circles shown below. The radius of the smaller circle is $4 \mathrm{cm}$ and $PQ=2 \mathrm{cm}$. Find the length of the diameter of the smaller circle.

$O$ is the common centre of the two circles shown below. The radius of the smaller circle is $4 \mathrm{cm}$ and $PQ=2 \mathrm{cm}$. Find the length of the diameter of the bigger circle.

$O$ is the common centre of the two circles shown below. The radius of the smaller circle is $4 \mathrm{cm}$ and $PQ=2 \mathrm{cm}$. If $S$ is a point at a diatance $5 \mathrm{cm}$ from $O$, then $S$ lies in the _____ of the smaller circle and _____ of the bigger circle.

Name (at least $8$) different polygons that can be seen in the given diagram:

With reference of the given diagram and name the two pairs of adjacent sides.

Draw a rough sketch of  a quadrilateral $EFGH$ and name a diagonal.  

With reference of the given diagram and name the two pairs of adjacent angles.