1, vertical alignment

Vertical alignment refers to determining the position of a point or line segment by drawing a vertical line. For example, we can determine the distance between a point and a straight line by drawing a vertical line, or determine a point at the intersection of two straight lines by drawing two vertical lines.

2. Parallel alignment method?

Parallel line alignment refers to determining the position of a point or line segment by drawing parallel lines. For example, we can determine the distance between a point and a straight line by drawing parallel lines, or we can determine that a point is on the parallel lines of two straight lines by drawing two parallel lines.

3. similar triangles alignment method.

Similar triangles alignment method refers to determining the position of a point or line segment by drawing a similar triangles. For example, we can determine the distance from a point to a straight line by drawing a similar triangle, or determine a point at the intersection of two straight lines by drawing two similar triangles.

The importance of mathematics:

1, mathematics is the foundation of being a man.

Mathematics is the foundation of settling down, which is especially important for people engaged in science and engineering research and study. People who don't know mathematics can't understand the depth of the world, and people who don't know mathematics can't understand the depth of philosophy. Only those who understand mathematics and philosophy can flexibly apply mathematics to various fields, so as to better solve problems and improve themselves. Therefore, mathematics is the foundation of settling down.

2. Evergreen knowledge

Evergreen knowledge is an indispensable part of mathematics and an important tool for us to understand the world and solve problems. Many discoveries in mathematics are established through the efforts and innovations of a generation of algebra, and these discoveries have eternal significance, from which we can get enlightenment and lessons.

By learning evergreen knowledge, we can master the basic concepts and principles of mathematics, cultivate the ability of logical thinking and problem analysis, and lay a solid foundation for future study and work.

3. Important science

Mathematics is a science that studies the quantitative relationship and the laws of spatial form, and has the characteristics of universal application. Mathematics can not only help us understand and solve problems in the real world, but also guide us to carry out scientific research and innovation. The development and evolution of mathematics enable us to establish mathematical models and theories and explore the mysteries of mathematics.

By studying mathematics, we can master basic mathematical concepts and operations, and cultivate logical thinking and reasoning ability. Mathematics is not only a basic science, but also an indispensable tool in the field of modern technology and economy.