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.
Work on Trigonometry WDL. Artwork ru fr Ricci Matteo en Ricci Matteo zh pt Ricci Matteo ar es Ricci Matteo ru fr Ouvrage de trigonomtrie en Work on Trigonometry zh pt Obra sobre trigonometria ar ru fr
Page 2023 Free-images.com. All images are Public Domain