In the given figure, $ABCD$ is a parallelogram. If $\angle \mathrm{ABD}=35°$ and $\angle \mathrm{ABC}=113°$, then find the values of $x$ and $y$.

In the given figure, $ABCD$ is a rectangle in which $AB=6 \mathrm{cm}$ and $AD=8 \mathrm{cm}$. $P$ and $Q$ are mid-points of the sides $BC$ and $CD$, respectively. If the length of $PQ=k \mathrm{cm}$, find $k$.

The sum of interior angles of a quadrilateral is _____ right angles.
 

If one pair of opposite sides of a quadrilateral is parallel, then it is called a
_____.

 If both pairs of opposite sides of a quadrilateral are parallel, then it is called a
_____.

If one angle of a parallelogram is a right angle, then it is called a _____.

 If all the four sides of a parallelogram are equal, then it is called a _____.