Exercise 5.6

If the value of $x=k°$ and the $\angle AOB$  is a right angle, then find the value of $k$.

In the given figure, If the value of $x=k°$, then find the value of $k$.

In the figure $POQ, ROS$ and $TOU$ are straight lines. If the value of $x°=k$, then find the value of $k$.

A plumber must installs pipe $2$ parallel to pipe $1$. He knows that $\angle 1$ is $53$. If the measure of $\angle 2=k°$, then find the value of $k$.

If the value of $y=k°$, the find the value of $k$.

If the value of $z=k°$, the find the value of $k$.

Two parallel lines are cut by a transversal. If one angle of a pair of corresponding angles can be represented by $42°$ less than three times the other. Find the corresponding angles.

In the given figure, $\angle 8=107°$, If the sum of the $\angle 2$ and $\angle 4$ is $k°$, then find the value of $k$.