This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Rotace souradnic kart.svg Rotace kartzsk soustavy souadnic Rotation of Cartesian coordinates Transferred from org cs transferred to Commons by User Sevela using de php CommonsHelper Pajs at org cs cs Pajs original upload log page cs Rotacesouradnickart svg Pajs bytes no kartzsk soustavy souadnic Cartesian coordinates