A regular decagon has all its interior angles equal. What is the measure of each interior angle of a regular decagon? Choose the correct answer.

If an angle $r$ in standard position has its terminal side passing through the point $(0,1)$ on the unit circle, what is the measure of angle $r$ in degrees?

Given that angle $psq$ is in standard position and its terminal side passes through the point $(0,1)$ on the unit circle, what is the measure of angle $psq$ in degrees?

If an angle in standard position measures $120°$, what is the measure of its minor arc on the unit circle?

If an angle in standard position has its terminal side passing through the point on the unit circle corresponding to a rotation of $200°$, what is the measure of the angle in degrees?

Which statement best defines an angle in standard position?

Given a circle with center $O$ and points $Q$, $S$, and $R$ on the circumference such that angle $QOR$ is $60°$, what is the measure of arc $QSR$ in degrees?

Given that angle $tsu$ is in standard position and its terminal side passes through the point $(0,1)$ on the unit circle, what is the measure of angle $tsu$ in degrees?

In a regular pentagon, what is the measure in degrees of each interior angle?