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.
Conic xxyy. en Graph of the conic xyy it Grafico della conica xyy own Goemon settembre Check categories September it Rappresentazionematricialedelleconiche Conic sections Unidentified graphs
Page 2023 Free-images.com. All images are Public Domain