High Quality Content by WIKIPEDIA articles! The tangram is a dissection 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 (given only in outline or silhouette) using all seven pieces, which may not overlap. The Tangram may have roots in the yanjitufurniture set of the Song Dynasty. This furniture set saw some variation during the Ming Dynasty, and later became a set of wooden blocks for playing.While the tangram is often said to be ancient, the earliest known printed reference to tangrams appears in a Chinese book dated 1813, which was probably written during the reign of the Jiaqing Emperor.

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