Question : In the given figure, $\mathrm{O}$ is the centre of the circle and $\angle\mathrm{AOB}=130^{\circ}$. Find $\angle\mathrm{APB}$.

Option 1: $110^{\circ}$

Option 2: $115^{\circ}$

Option 3: $100^{\circ}$

Option 4: $95^{\circ}$

Question :
In the given figure, $\angle ABC=81^{\circ}$ and $\angle ACB=9^{\circ}$. What is the value of $\angle BDC$?

Option 1: 80°

Option 2: 90°

Option 3: 70°

Option 4: 60°

Question : In the given figure, PQRS is a square and SRT is an equilateral triangle. What is the value of $\angle SOR ?$

Option 1: $45^{\circ}$

Option 2: $55^{\circ}$

Option 3: $60^{\circ}$

Option 4: $75^{\circ}$

Question : In the given figure, the measure of $\angle A$ is:

Option 1: $50^{\circ}$

Option 2: $40^{\circ}$

Option 3: $20^{\circ}$

Option 4: $60^{\circ}$

Question : In the figure given below, PQ is the diameter of the circle with centre O. If $\angle QOR=100^{\circ}$, then the measure of $\angle PSR$ is:

Option 1: $160^{\circ}$

Option 2: $80^{\circ}$

Option 3: $40^{\circ}$

Option 4: $100^{\circ}$