https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13989241Edit ImageSaveSaveEditCropCustom TextPythagoras. Line engraving by B. Bartoccini after C. C. Perkins.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 854 x 1200 px | 300 dpiLarge JPEG 2384 x 3351 px | 300 dpiFree DownloadPythagoras. Line engraving by B. Bartoccini after C. C. Perkins.More