The angles x – 10° and 190° – x are

6

The angle which makes a linear pair with an angle of 61° is of

7

The angles x and 90° – x are

9

In Fig. 5.10, the value of x is

10

In Fig. 5.11, if AB || CD, ∠APQ = 50° and ∠PRD = 130°, then ∠QPR is