The Tangram is a Chinese puzzle.
The object is to put seven geometric shapes together so as to form a given outline. All the pieces must be used and are laid next to one another. The pieces are five triangles, a square and a parallelogram. Sometimes there is more than one solution. They're all accepted as long as they have the same outline.
This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/zirneklitis/gtans/