The tangram is a puzzle consisting of seven flat shapes, called tans, which are put together to form shapes. The objective of the puzzle is to form a specific shape using all seven pieces. People believe it was invented in China during the Song Dynasty, and then brought to Europe in the early 19th century.
Number of configurations change
Over 6500 different tangram problems have been created from 19th century texts.
There are seven peices called Tans: