Answer:
(x, y) → (-x, -y)
Step-by-step explanation:
Look at the picture.
The rotation of 180 ° relative to the center point in the origin is the same as the symmetry around the origin.
Coordinates in symmetries:
[tex]\begin{array}{c|c|c|}&(x,\ y)\\\\S_{OX}&(x,\ -y)\\\\S_{OY}&(-x,\ y)\\\\S_{(0,\ 0)}&(-x,\ -y)\end{array}[/tex]
