Ruler drawing mainly examines students' practical ability, which is one of the hot spots in the senior high school entrance examination in recent years. Ruler drawing refers to drawing with scaleless ruler and compasses. Ruler drawing is a mathematical discipline that originated from ancient Greece. Only compasses and rulers are used, and only a limited number of times are allowed to solve different plane geometric drawing problems. Ruler The rulers and compasses used for drawing are imaginary, which are not exactly the same as those in reality.