As follows:
Geometric graphics, that is, all kinds of graphics abstracted from physical objects, can help people effectively describe the complex world. There are geometric figures everywhere in life, and everything we see is composed of basic geometric figures such as points, lines and surfaces. Geometry originated from western geodesy, which solves the relationship between points, lines and surfaces.
The endless changes make the geometric pattern itself have endless charm. Geometric graphics are divided into three-dimensional graphics and plane graphics, and graphics whose parts are not in the same plane are called three-dimensional graphics); . A figure whose parts are on the same plane is called a plane figure.
Geometric graphics are widely used, and they are needed in design, painting creation and mathematical research. Mathematical definitions, theorems, etc. It is very abstract in mathematical language, and it is difficult to remember theorems. If geometric figures and numbers are properly combined in teaching, learners can deepen their understanding of intuitive figures and master their theorems.
The development of graphics is closely related to the historical development of human society. As early as the primitive society, human beings began to record their thoughts, activities and achievements, express their feelings and communicate with each other by pictures. At that time, the purpose of painting was not to appreciate beauty, but to express feelings and thoughts. It was regarded as a medium of communication and became the most primitive figure.
There is actually a graphic period between the speech period and the writing period of human society, such as cave art in southern France. It is speculated that the figures in the caves are more than 30,000 years earlier than the hieroglyphics in Egypt and China. At that time, people hoped to transmit information in productive labor and social activities.
Many picture signs are designed to express ideas in the form of visual symbols, and gradually improve, simplify and unify them, making them more and more perfect. In the cave murals of North American Indians, we can see very simple and symbolic graphic symbols.
With the further development of society, graphic symbols are gradually unified and perfected, and then words are produced. The appearance of characters enables information to spread widely and accurately across time and space, and enables human civilization to inherit and develop.
Around 3000 BC, Sumerians in the two river basins created so-called "cuneiform characters" carved on wet clay boards with sawdust, which basically belonged to hieroglyphics. Chinese characters in our country are also hieroglyphics derived from pictures. As early as Neolithic pottery, there were already figures similar to figures.