The square is introduced as follows:
A square is a special parallelogram. That is, a group of parallelograms with equal adjacent sides and a right angle is called a square, also known as a regular quadrilateral. A square has all the characteristics of a rectangle and a diamond. A parallelogram with a right angle and a set of equal adjacent sides is a square.
The square diagram is introduced as follows:
A square graph is a graph that represents the numerical value of statistical indicators by the size of the square area. This chart can be used to compare statistical indicators such as land area, gross national product and sales. The drawing method is as follows: first, find the root and square root of each index value; If the side length of a square is equal to the square root, a square diagram can be drawn according to the side length.
Mathematical graphic transformation is introduced as follows:
Mathematical graphics refer to graphics related to mathematics, such as geometric graphics and functional graphics. These include planar graphics (such as lines, curves, polygons and planar areas) and spatial graphics (such as spatial curves, surfaces, solids, spatial areas, etc.).
When a figure is folded along a straight line, the parts on both sides of the straight line can overlap each other, then this figure is called an axisymmetric figure, and this straight line is called an axis of symmetry. The axis of symmetry bisects the line segment connecting two symmetrical points.
When changing from one figure to another, all points on the original figure move the same distance in the same direction. Such a graphic change is called translation transformation of graphics, or translation for short. The distance between the corresponding point and the center of rotation is equal. The angle formed by the connecting line between the corresponding point and the rotation center is equal to the rotation angle.
In the process of changing from one figure to another, all points on the original figure revolve around a fixed point and rotate in the same direction by the same angle. This kind of graphic change is called the rotation transformation of graphics, which is called rotation for short. This fixed point is called the center of rotation.