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.
Keywords from Image Description:
Houghton Euclid Elements Arabic . en Translation of Euclid's Elements Elementorum geometricorum libri tredecim in Arabic by Nasir alDin alTusi lib harvard edu Houghton Library Harvard University lib harvard edu Houghton Library Harvard Universitybr institution Houghton Library Euclid and Nasir alDin alTusi This