In the following figures, do angles $\mathrm{B}$ and $\mathrm{E}$ form a linear pair? Give Reason.

 

 An angle is equal to its complement. What is its magnitude?
 

 What is the supplement of $\angle \mathrm{DEF}$ ?

 In the following figure, name the vertically opposite angle of $\angle \mathrm{DOE}$.

In the following figure, identify the linear pair.

Fill in the blanks (with respect to the following figure) :

In a linear pair, the sum of the two adjacent angles will be equal to_____

 Find out the supplements of the $90°$