(2,5π4)\left(2, \frac{5 \pi}{4}\right)(2,45π)
(2,π4)\left(2, \frac{\pi}{4}\right)(2,4π)
(2,π4)\left(\sqrt{2}, \frac{\pi}{4}\right)(2,4π)
(2,5π4)\left(\sqrt{2}, \frac{5 \pi}{4}\right)(2,45π)