Geometry is a branch of mathematics, with calculus as the basic tool, functions (such as mapping and relations) as the main research object and limit as the basic idea. Many classical branches of mathematics and their modern extensions are collectively referred to as analysis abbreviation. Geometry is the study of spatial structure and properties. It is one of the most basic research contents in mathematics, which has the same important position as analysis and algebra, and has a very close relationship.

Geometry has a long history and rich contents. It is closely related to algebra, analysis and number theory. Common theorems are Pythagorean Theorem, euler theorem Theorem and Stewart Theorem.