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:
Trianglepointcirclecircumscribedcircle.svg en Ninepoint circle to the triangle ABC with circumscribed circle de Feuerbachkreis des Dreiecks ABC mit Umkreis own MartinThoma ValidSVG Source is available at github TikZ diagrams Images by Martin Thoma Ninepoint circle Quality images by Martin Thoma Cczero ImageNote Kannst Du