Projectable articulated triangle

Função

Intended for experimental study, mathematics laboratory and carrying out mathematical experiments on: Mathematics. Trigonometry. The angular properties of triangles. The classification of triangles according to their sides. The property of the sum of the measures of the internal angles of the triangle. The property of the sum of the acute angles of the right triangle. The external angles of a triangle. The property of the sum of the external angles of the triangle. The property of the equality of each external angle with the sum of the adjacent internal ones. The fundamental trigonometric relations of the right triangle. The complementary internal angles of the triangle. The sine of an acute internal angle of the triangle. Measuring the sides of different right triangles. The tangent of an acute internal angle of the triangle. The two fundamental relations of the right triangle. Pythagoras' theorem, a metric relation between the sides of a right triangle. The law of sines and cosines in a right triangle. Constructing a triangle with known sides, etc.