If a pair of opposite angles of a quadrilateral is complementary, then the quadrilateral is cyclic quadrilateral

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

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

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 given figure, if the chord $\mathrm{ED}$ is parallel to the diameter $\mathrm{AC}$. Then, the measure of $\angle \mathrm{CED}$ will be

In the following figures $A, B, C$ and $D$ (if marked in the figure) lie on the circle. Point $O$ (if marked in the figure) is the centre of the circle.

Which of the following figures has a cyclic quadrilateral?

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

The unknown angle $\angle x=$_____$°$

In figure, $AOB$  is the diameter of a circle and $C,D \text{and} E$ are three points situated on semi circle. The value of $\angle ACD+\angle BED=$_____$°$

In the given figure, if $\angle POR=110°$, then the value of $\angle PQR$ is