The figure, given alongside,shows two adjacent angle AOB and AOC whose exterior sides are along the same straight line.Find the value of x.

Each figure, given below, shows a pair of adjacent angles AOB and BOC.Find whether or not the exterior arms OA and OC are in the same straight line.

Each figure, given below, shows a pair of adjacent angles AOB and BOC. Find whether or not the exterior arms OA and OC are in the same straight line.

Each figure, given below, shows a pair of adjacent angles AOB and BOC. Find whether or not the exterior arms OA and OC are in the same straight line.

Identify $\angle 2$ and $\angle 4$ from the below as adjacent angles, vertically opposite angles, interior alternate angles, corresponding angles or exterior angles.

Identify $\angle 1$ and $\angle 8$ from the below as adjacent angles, vertically opposite angles, interior alternate angles, corresponding angles or exterior angles.

Identify $\angle 4$ and $\angle 5$ from the below as adjacent angles, vertically opposite angles, interior alternate angles, corresponding angles or exterior angles.

Identify $\angle 1$ and $\angle 5$ from the below as adjacent angles, vertically opposite angles, interior alternate angles, corresponding angles or exterior angles.