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.
Schiaparelli . it Costruzione dei quadrati sui lati di un triangolo rettangolo teorema di Pitagora Edizione originale dell'opera Giovanni Virginio Schiaparelli other versions Custom marker PDold Geometry
Page 2023 Free-images.com. All images are Public Domain