Geometric graphics, that is, all kinds of graphics abstracted from physical objects, can help people effectively describe the complex world. 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. All kinds of figures abstracted from objects are collectively called geometric figures.
The fifth grade is a stage of primary school learning. Fifth-grade students in five-year primary schools have to face junior high school exams. The fifth-grade students in six-year primary schools have the most elementary knowledge and are ready for the sixth grade. The subjects studied at this stage are Chinese, mathematics, English, science and so on.