Noun
A Chinese toy made by cutting a square of thin wood, or other suitable material, into seven pieces, as shown in the cut, these pieces being capable of combination in various ways, so as to form a great number of different figures. It is now often used in primary schools as a means of instruction.
Source: Webster's dictionaryNumber of configurations The 13 convex shapes matched with Tangram set Over 6500 different tangram problems have been created from 19th century texts alone, and the current number is ever-growing. citation The number is finite, however. Source: Internet
The first Tangram book to be published in America was based on the pair brought by Donnaldson. Source: Internet
The Tangram Book: The Story of the Chinese Puzzle with Over 2000 Puzzles to Solve. Source: Internet
" The tangram had already been around in China for a long time when it was first brought to America by Captain M. Donnaldson, on his ship, Trader, in 1815. Source: Internet