Фрагмент из книги:
The Tangram is an old Chinese puzzle which consists of seven pieces. Each piece is made up of one or more right-angled isosceles triangles. In total there are 16 triangles and the objective is to assemble these pieces into a given shape.
Over the years, thousands of puzzles have been created with those seven pieces. Most of them require us to figure out the arrangement of the pieces just by looking at the silhouette of the shape.
