Plane geometric drawing is limited to rulers and compasses. The so-called ruler here refers to a ruler that can only draw straight lines without scale. Of course, many kinds of figures can be made with rulers and compasses, but some figures, such as regular heptagon and regular nonagon, can't be made. \x0d\ Here are some geometric drawing software \ x0d \ (1) Geometer (3D dynamic drawing software) V3.3 is good. \x0d\(2)stfmath, a multifunctional mathematical tool. With drawing function. In addition, there are matrix calculation, imaginary number calculation, geometric calculation, geometric unit conversion, function estimation and other functions. Not only for students, but also for engineers. \x0d\(3)AutocadLT2D drawing software \x0d\(4)sai software multi-version collection software package \x0d\(5)cad drawing software is the most popular CAD software package in the field of computer aided design (CAD). The software is powerful, easy to use and reasonable in price, and is widely used in machinery, construction, home, textile and other fields at home and abroad.