Identify the coordinates of the point shown below in polar form based upon the given conditions. Use pi for π\displaystyle \pi.

r>0\displaystyle {r}>{0} and 0<θ<2π\displaystyle {0}<\theta<{2}\pi
(\displaystyle {(} , )\displaystyle {)}

r<0\displaystyle {r}<{0} and 0<θ<2π\displaystyle {0}<\theta<{2}\pi
(\displaystyle {(} , )\displaystyle {)}