Two lines AB and CD intersect at a point O such that ∠BOC+∠AOD=280

1.	Two lines AB and CD intersect at a point O such that ∠BOC+∠AOD=280∘, as shown in the figure. Find all the four angles.
Answer» Two lines AB and CD intersect at a point O such that $∠ B O C + ∠ A O D = 280^{\circ}$ , as shown in the figure. Find all the four angles.

Two lines AB and CD intersect at a point O such that ∠BOC+∠AOD=280∘, as shown in the figure. Find all the four angles.

Answer»

Two lines AB and CD intersect at a point O such that $∠ B O C + ∠ A O D = 280^{\circ}$ , as shown in the figure. Find all the four angles.