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.
Triangular Pyramid Tetrahedron.svg en shaded wireframe triangular pyramid This is type of tetrahedron Created with GeoGebra own DEMcAdams cczero Uploaded with Set of polyhedra simple gray Tetrahedron
Page 2023 Free-images.com. All images are Public Domain