Triangle constructors - first box

The sensory game of the first constructor triangle box is useful for the discovery and knowledge of plane geometry. Triangles are called constructors because each triangle is used to construct other figures. All triangles have a black line on some of their sides, which is a real guide to the exercise, as new geometric figures are formed by joining the lines on the two sides. The box contains three pairs of scalene right-angled triangles, two pairs of isosceles triangles, one pair of equilateral triangles, one isosceles triangle, one scalene right-angled triangle. The game encourages the discovery of geometric shapes and helps to understand that all plane shapes are made up of two or more triangles, stimulates the ability to concentrate, refines the sensory perception of sight and helps in the knowledge, classification and memorisation of the various figures.