Answer
5 radians
Work Step by Step
Counterclockwise rotation -> positive angle
Draw a circular arc from the extremity of the initial side to the extremity of the terminal side. Use the formula:
$s=r\theta$
$\theta=\frac{s}{r}$
Given that the length of the arc, $s$, is about 5 times the length of the sides, $r$:
$\theta=5~radians$
