Several original cases of jigsaw puzzle

Tangram consists of three kinds of figures.

Comprises five isosceles right triangles, a square and a parallelogram, wherein the five isosceles right triangles comprise two small triangles, a middle triangle and two large triangles.

Tangram is an ancient traditional intellectual toy in China. As the name implies, it consists of seven boards. These seven boards can be combined into many figures (1600), such as triangles, parallelograms, irregular polygons, etc. Players can also combine them into various characters, images, animals, bridges, houses, towers, etc., or some Chinese and English letters.

Tangram was invented by the working people in ancient China, and its history can be traced back to at least the first century BC, and it was basically finalized in the Ming Dynasty.

Ming and Qing Dynasties were widely circulated among the people in China. Qing people wrote in Volume I of Cold Records Miscellaneous Knowledge: There are seven ingenious pictures with five shapes and seven numbers recently, and there are thousands of changes. Things are small in shape, changing at will, and full of games, which are enough to relieve boredom and break the silence, so secular people like them.

/kloc-in the 0/8th century, the jigsaw puzzle spread abroad. Needham said it was one of the oldest pastimes in the East, and the library of Cambridge University in England also collected "seven ingenious new music".

Tangram, also known as Tangram and Wisdom Board, is an intellectual toy circulated among the people in China. It evolved from the banquet in the Song Dynasty, initially as an indoor game for literati, and later evolved into a folk jigsaw puzzle.