Mathematical set, plane geometry

Função

Intended for experimental study, mathematics laboratory and carrying out mathematical experiments on: Mathematics. Plane and metric geometry. How to obtain polygonal lines, quadrilateral and trilateral polygons and their perimeters. The open and closed polygonal line. Polygons. The quadrilateral polygon, rectangle. The base and height in rectangles. The quadrilateral polygon, the square. The trilateral polygon, triangle. The height of a triangle. Congruence, congruent triangles. The three types of triangles. The right triangle. The quadrilateral polygon, parallelogram. The quadrilateral polygon, trapezoid. The quadrilateral polygon, rhombus. The perimeter of a polygon. The diagonals of a polygon. How to obtain the areas of the rectangular, square and triangular polygons? What is meant by the area of an internal flat region of a polygon. Constructing a quadrilateral polygon, rectangle. The area of the quadrilateral polygon, rectangle. Constructing a quadrilateral polygon, square. The area of the quadrilateral polygon, square. Constructing a trilateral polygon, right triangle. The area of the trilateral polygon, right triangle. Constructing other polygons, determining areas and discussing congruence. How to obtain the areas of parallelogram, trapezoid and rhombus polygons?. The quadrilateral polygon, parallelogram and congruent triangles. The area of the quadrilateral polygon, parallelogram. The area of the quadrilateral polygon, trapezoid. The area of the quadrilateral polygon, rhombus, etc.