If arc $AXB$ and arc $AYB$ are corresponding arcs and $m\left(arc AXB\right)=120°$ then $m\left(arc AYB\right)$ is

Some arcs are shown in the circle with centre O. Write the names of the minor arcs, major arcs and semicircular arcs from among them.

In a circle with centre $O$, the angle measure of a minor arc is $110°$. If the angle measure of the major arc $PYQ$ is $k°$, find the value of $k$.