Triangles constructors - fourth box

The sensory game of the fourth 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. The box contains one equilateral triangle, ten isosceles right triangles that are one third of the whole. All the 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 game encourages the discovery of geometric shapes and helps to understand that all plane shapes are made up of two or more triangles, facilitates the learning of the concepts of equivalence and similarity, stimulates the ability to concentrate, refines the sensory perception of sight and helps in the knowledge, classification and memorisation of the various figures.