Tangram Puzzle Book
Tangram is a traditional Chinese puzzle game that consists of seven flat pieces called "tans." These seven tans are put together to form a square. The puzzle's objective is to rearrange these pieces to form a particular shape or design using all seven pieces, which may not overlap.
The seven tans consist of two large right triangles, one medium-sized right triangle, two small right triangles, one square, and one parallelogram. These pieces can be arranged in various ways to create a wide range of shapes, animals, numbers, and objects.
The image shown is a tangram puzzle and a solution book from China. The tangram puzzle is made of mother of pearl, which comes with a book of 342 Tangram solutions.