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What is Euler's junior high school mathematics?
Refers to the mathematical knowledge that Euler learned in junior high school.

According to Baidu Library, Euler's elementary mathematics refers to the mathematical knowledge that Euler learned in the elementary stage. Euler is a famous mathematician who has made many important contributions in the field of mathematics. In junior high school, Euler learned a lot of basic mathematical knowledge, which laid a solid foundation for his future mathematical research.

In Euler's junior high school mathematics, the most basic knowledge is mathematical operation. Euler learned four operations of addition, subtraction, multiplication and division, and basic concepts such as fractions, decimals and percentages. This knowledge is very important for the calculation in daily life, and it is also the basis for further learning more advanced mathematics knowledge. In addition to basic mathematical operations, Euler also studied algebra. Algebra is an important branch of mathematics, which studies the relationship between unknown quantities and known quantities. Euler learned the representation of algebraic expressions, the addition, subtraction, multiplication and division of algebraic expressions, and the one-dimensional linear equation. This knowledge laid the foundation for his future algebraic research. Geometry is also an important part of junior high school mathematics. Euler studied the basic concepts of plane geometry and solid geometry such as point, line, surface, angle, triangle, quadrilateral and circle. He also studied the properties and calculation methods of geometric figures, such as Pythagorean theorem, similar triangles theorem, sine theorem and cosine theorem.