恩格斯说:“纯数学的对象是现实世界的空间形式和数量关系.”“数”和“形”是数学中两个最基本的概念,它们既是对立的,又是统一的.每一个几何图形中都蕴含着与它们的形状、大小、位置密切相关的数量关系;反之,数量关系又常常可以通过几何图形做出直观地反映和描述.在解决代数问题时,想到它的图形,从而启发思维,找到解题之路;在 Engels said: “The object of pure mathematics is the spatial form and quantity relationship of the real world. The ”“” number“ and ”shape" are the two most basic concepts in mathematics. They are both antagonistic and unitary. Each geometrical figure contains quantitative relationships that are closely related to their shape, size, and position. Conversely, quantitative relationships can often be intuitively reflected and described by geometrical figures. When solving algebraic problems, think of it. Graphics to inspire thinking and find solutions to problems;