This image of simple geometry is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.
Uploaded a work by Official website of Indian Army from https://indianarmy.nic.in/Site/FormTemplete/frmTempSimple.aspx?MnId=E9d1ZBFPlP+TuXvqgtLAUw==&ParentID=QWRYMKYE9uH04Lni8aQOvA== with UploadWizard