Use the pieces of the tangram puzzle to fit into the outline. Hold down the shift key [or shift] while you drag to rotate the pieces.
As you make each shape you could take a screen grab (use the Snipping Tool in Windows) to keep a record of your findings.
The tangram puzzle is believed to have been invented in China and then brought to Europe by trading ships in the early 19th century. It became very popular in Europe during World War 1 and is now one of the most popular dissection puzzles in the world.
There are solutions to this puzzle but they are only available to those who have a Transum Subscription.