https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13999477Edit ImageSaveSaveEditCropCustom TextPythagoras. Etching by P. Fidanza after Raphael.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 910 x 1200 px | 300 dpiLarge JPEG 2507 x 3305 px | 300 dpiFree DownloadPythagoras. Etching by P. Fidanza after Raphael.More