In the diagram given below $ABCD$ is a cyclic quadrilateral. The value of $\angle BAD=$_____

In figure $PQ$, is a chord of a circle with centre $O$ and $PT$ is its tangent at $P$. if $\angle QPT=60°$, then $\angle PRQ$ is

In the figure, points $P,Q,R$ and $S$ lie on a circle. Then the values of $x$ and $y$ are respectively

The sum of pairs of opposite angles of a cyclic quadrilateral is

In the given figure, altitudes $\mathrm{YZ}$ and $\mathrm{XT}$ of $\mathrm{\Delta WXY}$ intersect at $\mathrm{P}$. Prove that, $\square \mathrm{WZPT}$ is cyclic.

State whether the following statements are true or false.

All rhombuses are rectangles.

Write the quadrants in which the following points lie:

$\left(-4,7\right)$