Question

In the diagram above, $\angle AOB=$

• A. ${90}^{\circ }$
• B. ${180}^{\circ }$
• C. $0^{\circ }$

Answer 1

The correct option is C $0^{\circ }$

As the image suggests that the rays OA and OB lies on the same line.
$\Rightarrow$ Rays $OA\&OB$ are concurrent.
$\Rightarrow \angle AOB=0^{\circ }$.