(−15,25)\left(-\frac{1}{5}, \frac{2}{5}\right)(−51,52)
(15,25)\left(\frac{1}{5}, \frac{2}{5}\right)(51,52)
(25,−15)\left(\frac{2}{5},-\frac{1}{5}\right)(52,−51)
(25,15)\left(\frac{2}{5}, \frac{1}{5}\right)(52,51)