The history of tangrams

I. Origin of Tangrams III. Development of Modern Intellectual Tangrams

The word "tangram" first appeared in the Zhou Dynasty, when the cowherd and the weaver met at the magpie bridge on the seventh night of the seventh month.

The word "tangram" first appeared in the Zhou Dynasty, when the Cowherd and the Weaving Maiden bridged the bridge on the seventh night of the seventh month of the lunar calendar. However, the shortcomings of the traditional tangram are obvious: 1) the triangles are too many repetitions;

The meeting time. The girls have a custom of "threading a needle through a thread" to see who can thread it through first, and the lack of the world's most beautiful shape, the circle. This affects and limits the function of the puzzle, especially

This custom is called "begging for coquettishness", which means "praying for coquettishness on the eve of the seventh day of the seventh month". Therefore, the word "seven coincidences" is the most difficult to express a hundred years of technology under the kickball, skating, cars, tanks, space shuttles, ...... and other modern

The first time is used to predict the luck of the draw. A new picture of the tangible world. This is also after thousands of years of conceptualization, evolution and refinement of tangrams of the ancient creation

The origin of the "traditional tangrams" is unforeseen by the beginners.

Traditional tangrams originated from the Song Dynasty's "Yan Gui Tu" (燕几图), which means "swallow" and "feast", and "Yan Gui Tu" (燕几图) means "feast", and "Yan Gui Tu" (燕几图) means "feast", and "Yan Gui Tu" (燕几图) means "feast". In order to expand the function of the tangram board, teacher Lou Zhuqiu, a researcher of graphic science popularization, has added a small table top to the traditional table top, which is a table for banquets, and then added a small table top. On the basis of the modern higher mathematics of a few

Renamed "seven stars", depending on the number of guests, can be arbitrarily arranged into different shapes of the big Ho topology and linear planning principles designed "modern intellectual tangram".

The tabletop, which is the prototype of the traditional jigsaw puzzle, pioneered jigsaw puzzles for generations to come. In the West it is known as the Tangram. It is certain that Tangram and similar games such as Yanqiqi, Dieqiqi, or Puzzles were popular in the Ming and Qing Dynasties. Therefore, the invention of Tangrams may have originated from Butterfly Gui in the late eighteenth to early nineteenth centuries. The tangram board was made by taking the right half of the butterfly-shaped board in Figure 2, cutting it twice, and reassembling it to form the tangram board. Tangrams soon spread to Japan and Europe. In Europe, a bibliography compiled in 1805 already included a book introducing Chinese tangram puzzles. The Japanese tangram puzzle is slightly different in the way it is divided. It is supposed to be a variation of the center square of the butterfly pattern. Because Japan in 1742 published "Qing Shao Nayan Wisdom Board" book, and China can now find the "seven tangrams Tuhebi" was published in 1803, so Japan believes that the tangrams are not passed on from China.