An image of a green, red, and gray shape with instructions on how to cut the shape out and fold it. When the picture is folded correctly it forms a 3D tetrahedron shape.
This is a completely free image Cut Out Tetrahedron Ornament that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.