Property of Sum of Measures of Arcs

Q. If $arcABC={110}^{\circ }$ and $arcCDE={120}^{\circ },$ then the measure of arc ACE is equal to?

1. ${260}^{\circ }$
2. ${230}^{\circ }$
3. ${190}^{\circ }$
4. ${210}^{\circ }$

Q. If $arcABC={130}^{\circ }$ and $arcCDE={110}^{\circ },$ then the measure of arc ACE is equal to?

1. ${230}^{\circ }$
2. ${240}^{\circ }$
3. ${260}^{\circ }$
4. ${250}^{\circ }$

Q. A, B, C are any points on the circle with centre O. m(arc BC) = 120${}^{\circ }$ and m(arc AB) = 130${}^{\circ }.$
Then, find m (arc ABC), m (arc ACB), and m (arc BAC).
[3 Marks]