ABSTRACT
The seven pieces that make up a tangram can be traced and cut from the square shown: The object of the game is to group these seven pieces to form figures other than squares, such as a cat. The task is difficult because there are many different ways in which the seven pieces can be positioned and you must group them to make a whole figure. Note that even when the seven parts are clearly shown, the initial tendency is not to see seven individual parts but to see the totality of these parts grouped into the form of a cat.
