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.
Quadratura della parabola.svg it Dimostrazione della quadratura della parabola per approssimazione di triangoli succesivi own Fulvio Parabolas Quadrature of the Parabola
Page 2023 Free-images.com. All images are Public Domain