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.
Brahmaguptas formula.svg Illustration of Brahmagupta's formula based on PD Image Brahmaguptasformula Converted to SVG by user Brighterorange own assumed Brighterorange Brahmagupta's theorem
Page 2023 Free-images.com. All images are Public Domain