The Tangram consists of seven pieces that can be juxtaposed to form a square: 5 triangles in three sizes, 1 square and 1 parallelogram. The goal is to reproduce a given shape still using all pieces, they are laid flat and can not overlap.
With 32 models, this little headache will stretch your neurons softly.
Start by choosing a puzzle among the figures proposed. Use your mouse to select and move the pieces on the area of the puzzle. The CTRL key will rotate the selected piece to 180 degrees and the TAB key to 45°.